5 Ways To Teach You To Transfer Files from Oppo Find N3 Flip to Other Android Devices Easily

Transferring data from one phone to another when switching devices is a complex and tough task. The data stored in their old phone is one of the major reasons why people are hesitant to switch devices. However, it is only the case when you don’t know the right method. If you plan to switch to a new Android device, this article will help you transfer files from Oppo Find N3 Flip to Other Android Devices.

There are multiple ways to transfer files from one Android to another, but we have chosen the easiest 5 methods in this article. Stick with the article to find different methods for Android-to-Android file transfer, along with their pro, cons, and best-case scenarios.

Part 1: Transfer Files Between Android via Bluetooth

When trying to transfer files between Android phones, Bluetooth is available as the in-built option. It is part of all Android devices, and you don’t need any internet, computer, or cable to use it. Although newer and faster transfer methods have overshadowed Bluetooth as a data transfer option, it is still among the reliable options.

Steps To Transfer Files via Bluetooth

Step 1: Start by enabling Bluetooth on both Android devices and ensuring their visibility is set to all. Afterward, select the targeted files on the old Android phone.

Parental Control Software

#1 Rated Parental Control Software.
Monitor & Control all PC Activity!
sentrypc.com/parental-controls/ 

Step 2: Now, press the “Share” icon and select “Bluetooth.” Choose your new Android device from the available devices on the next screen.

Step 3: Move to your new Android phone and hit “Accept” to start the transfer process. The transfer time will be depended on the size of the files.

Pros and Cons

Pros	Cons
· It is an in-built option for all Android devices.	· It is an extremely slow method for transferring files
· You don’t need internet, cable, or Wi-Fi to send files via Bluetooth.	· If you send large files using this method, the process frequently fails, which can corrupt the files.
· Using Bluetooth doesn’t require any special knowledge or skills

Best For

Using Bluetooth is best for transferring small to medium, size files. It is also convenient when you can’t access the internet.

Part 2: Transfer Files from Oppo Find N3 Flip to Other Android Devices by Nearby Share

Nearby Share is a method developed by Google to share files between Android phones. It can be considered Google’s answer to Apple’s AirDrop, though, unlike AirDrop, it doesn’t require Wi-Fi. This method is available for all Android devices though you should use the latest Android OS for smoother working. Moreover, Bluetooth needs to be enabled to use this method.

Step-by-Step Guide To Transfer Files via Nearby Share

Step 1: You will need to activate “Nearby Share” on both devices first. To do that, go to the phone’s “Settings” and access the “Google” settings. Here, tap “Devices and Sharing,” and from the next appearing screen, choose “Nearby Share.”

Step 2: In the “Nearby Share” screen, toggle it on and set device visibility to “Everyone.” Once you activate it on both Android devices, find and select the files you want to transfer on the old Android phone.

Step 3: After selecting the required files, press the “Share” button and select “Nearby Share” from the options. It will detect nearby devices and select your new Android device once it appears. A prompt will appear on both phones with a matching PIN. Accept the files on the new phone to start the transfer process.

Pros and Cons

Pros	Cons
· It is a fast and secure way of transferring files between Android devices.	· You can only send limited types of files through this method.
· You do not need Wi-Fi to use this feature.	· This feature consumes a lot of battery if you use it for a long time or transfer large-size files.
· Nearby Share is available on a wide range of Android devices.

Best For

Using Nearby Share is recommended when you don’t have access to a computer or the internet, and you need to share large files.

Part 3: Transfer Files Between Android by USB Cable

If you have access to a computer, you can use it to transfer files from Oppo Find N3 Flip to Other Android Devices. All you need is a USB cable, and you are set. In this method, you will first copy data from the old phone to the computer and then copy it to the new phone from the computer. It works by default on Windows, but for Mac, you need Android File Transfer.

Instructions To Transfer Files by USB Cable

Step 1: First, connect your old Android phone to your computer using a USB cable. A prompt will appear on your asking for the USB purpose. Here, select “File Transfer/Android Auto.” It will give your computer access to the phone data.

Step 2: Now copy all the data you want to transfer to your computer and disconnect the old device. Afterward, connect the new Android device to the computer, give access permission, and copy the data you took from the old phone to the new phone.

Pros and Cons

Pros	Cons
· You do not need to use any third-party app for this method	· This method can be time-consuming as you need to transfer the same data two times.
· It is a reliable and secure method.	· It only works well on Windows; on Mac, it becomes a hassle.
· Only a USB cable is needed to transfer the data.

Best For

Using a USB cable is best for transferring data when you have large files and don’t have any better options.

Part 4: Sync Files from Oppo Find N3 Flip to Other Android Devices With Google Account

Google Account is another great way for Android-to-Android file transfer if you haven’t set up the new phone yet. It allows you to back up all your data on the old device and restore it to the new Android device. With this method, you can transfer most of the data from the old phone, including settings, contacts, notes, etc.

Step-by-Step Guide To Transfer Files With Google Account

Step 1: On your old Android device, go to “Settings” and tap “Google.” In the Google settings, select “Backup” and tap “Backup Now” to back up your phone. Once the backup is complete, move to the new device.

Step 2: When setting up the new Android device, sign in using the same Google Account. Afterward, select “Restore from Google Backup” when the option appears to restore the backup from the old phone.

Pros and Cons

Pros	Cons
· It can transfer most of the phone data to the new Android phone.	· If your old device data is larger than 15GB, then you have to buy the storage because Google only provides 15GB free storage.
· Using Google Account is also secure, as your backup is encrypted.	· It requires you to use the same Google Account on both devices.
· The devices don’t need to be near each other.

Best For

Using Google Account to transfer files from Oppo Find N3 Flip to Other Android Devices is best when you still haven’t set up the new Android device.

Part 5: Best choice: The Fastest Way to Transfer Files from Oppo Find N3 Flip to Other Android Devices with Dr.Fone

Want to find the best and fast way to transfer files from Oppo Find N3 Flip to Other Android Devices? If you don’t want to go through any time-consuming or complex transfer process, we recommend you use Wondershare Dr.Fone. It is a complete toolbox for smartphones and includes all the necessary solutions. Regarding Android data transfer, it can quickly transfer data between 8000+ Android devices, including the latest ones.

Key Features of Dr.Fone

• Using the Dr.Fone app, you can transfer data to Android devices with the latest Android 13 OS.
• This tool allows you to transfer, back up, and restore your entire WhatsApp data from chats to emojis to locations.
• If you have lost your phone data, you can recover it back using the Dr.Fone app safely and quickly.
• With this tool, you can also repair system issues in your device in a secure environment.

Steps To Transfer Files from Oppo Find N3 Flip to Other Android Devices With Dr.Fone

Aside from being the fastest way to transfer files between Android phones, it also has the simplest transfer process. You only need Dr.Fone installed on your system and a couple of USB cables to use this method. Here is how you can transfer files from phone to phone via Dr.Fone:

Step 1: Establish the Connection Between Android Devices

Use USB cables to connect both Android devices to the computer and launch Dr.Fone app. From the “Home” screen, click “Phone Transfer” and wait for the program to assign devices to the correct positions.

Step 2: Assign Android Devices to their Correct Positions

For transferring data from the old Android device to the new one, the old device should be at the “Source” position and the new device at the “Destination” position. If the positions assigned by the program are incorrect, use the “Flip” button to correct them.

Step 3: Select the Desired Data and Complete the Transfer Process

Now select the data you want to transfer and click “Start Transfer” to begin the transfer process. In case you want to delete data on the new device, select “Clear Data before Copy” before pressing “Start Transfer.”

Pros and Cons

Pros	Cons
· It can transfer over 15 types of data from one phone to another.	· You will need a computer to transfer data through Dr.Fone
· The transfer process of this method is extremely fast and gets completed within minutes.	· It also needs USB cables to connect your Oppo Find N3 Flips.
· You do not need the internet to use this method.

Best For

It is best for all sorts of data transfer situations. Whether you are transferring a few files or moving all the data, it is a perfect tool.

Conclusion

To summarize, while it may seem troublesome to transfer files from Oppo Find N3 Flip to Other Android Devices, in reality, it isn’t. This has been well demonstrated through the article using 5 of the easiest transfer methods. It includes methods suited for a few files, like Bluetooth, to the best method of using Dr.Fone. With Dr.Fone, you can transfer all types of data from Oppo Find N3 Flip to Other Android Devices in the shortest time possible.

How Can You Transfer Files From Oppo Find N3 Flip To iPhone 15/14/13?

Just got a shiny new iPhone 15/14/13 but don’t want to lose all your file data from your old Android phone? Transferring information from an Android device to an iPhone can seem daunting, but it doesn’t have to be. With the right tools and steps, you can seamlessly move your contacts, photos, videos, apps, and other important files from your Android to your iPhone 15/14/13 in no time.

In this guide, we’ll walk you through the easiest ways to transfer data from an Android smartphone to an iPhone 15/14/13, including both wired and wireless options. Whether you want to move your WhatsApp history, Google Photos library, or entire media collection, we’ve got you covered. With either a direct USB cable transfer, or dedicated mobile transfer app, you’ll have all your Android data on your new iPhone set up just the way you like it.

Follow our simple step-by-step instructions below to get started moving your file data from Oppo Find N3 Flip to iOS today!

Part 1: Transfer Data From Oppo Find N3 Flip to iPhone 15/14/13 Using Move To iOS

The easiest way for most people is to use the Move to iOS app that Apple created specifically for switching from Android. Here’s how:

Step 1: On your Oppo Find N3 Flip, download Move to iOS from the Google Play Store.

Step 2: When setting up your new iPhone 15/14/13, select the option to transfer data from Android.

Step 3: Open the Move to iOS app on your Oppo Find N3 Flip and tap Continue.

Step 4: Wait for a 6 or 10-digit code to appear on your iPhone and enter it on your Oppo Find N3 Flip.

Step 5: Connect both phones to the same WiFi network that your iPhone created.

Step 6: On Android, select the content you want to transfer like contacts, messages, photos, etc.

Step 7: Wait for the transfer process to finish, then tap Done on Android and Continue on iPhone.

Part 2: Transfer Data From Oppo Find N3 Flip to iPhone 15/14/13 Using USB Cable

You can also connect your Oppo Find N3 Flip directly to your new iPhone with the charging cable that came with your iPhone to transfer files:

Step 1: Connect your Oppo Find N3 Flip to your iPhone with the cable.

Step 2: On your Oppo Find N3 Flip, tap Allow to give permission.

Step 3: On iPhone, select Trust when prompted.

Step 4: In Files on iPhone, select the name of your Oppo Find N3 Flip.

Step 5: Select the content you want to transfer and tap Copy or Move.

Step 6: Choose a location on your iPhone like Photos to transfer the files.

And that’s it! With these simple steps, you can easily move your important info, photos, videos, and other content from your old Android to your slick new iPhone 15/14/13.

Part 3: How Can You Transfer Data From Oppo Find N3 Flip To iPhone 15/14/13 Using Google Drive?

If you have files stored on Google Drive, you can easily access them on your new iPhone by:

Step 1: Make sure everything you want to transfer is uploaded to Google Drive on your Android.

Step 2: On your iPhone 15/14/13, download the Google Drive app from the App Store.

Step 3: Sign into your Google account in the app and set Google Drive as a storage location.

Step 4: Your Google Drive content will now be available on your iPhone!

Part IV: How To Transfer Particular Data From Oppo Find N3 Flip To iPhone 15/14/13?

Want to move all your precious data from your Oppo Find N3 Flip over to your new iPhone 15/14/13? With some simple steps, you can easily transfer your contacts, photos, messages, and other key data.

Method 1: Transfer Contacts Using Sim Card

If you stored all your contacts on your Oppo Find N3 Flip’s SIM card, you’re in luck! This is the easiest way to move them to iPhone 15/14/13. Here’s how:

Step 1: Remove the SIM card from your Oppo Find N3 Flip and insert it into your iPhone 15/14/13.

Step 2: Open Settings and tap “Contacts Manager”.

Step 3: Choose “Manage SIM Card Contacts”.

Step 4: Tap “Import from SIM Card”.

And it’s done! All your SIM contacts are now safely stored on your iPhone.

Method 2: Transfer Photos Using Google Photos App

The Google Photos app makes it a breeze to transfer all your Android photos and videos over to your shiny new iPhone 15/14/13:

Step 1: Download the Google Photos app on your iPhone 15/14/13 if you haven’t already.

Step 2: In the Google Photos app on your Oppo Find N3 Flip, turn on Backup & Sync in Settings.

Step 3: On your iPhone Google Photos, enable Backup & Sync too.

Step 4: Give it some time, and all your media will transfer automatically from Oppo Find N3 Flip to iPhone!

Method 3: Transfer Messages Using SendAnywhere

If you use messages a lot, you’ll surely want to move your messaging history from your Android. The SendAnywhere app handles this seamlessly:

Step 1: Download SendAnywhere on both your Android and iPhone.

Step 2: Choose your Android as the Sender and, iPhone as the Receiver.

Step 3: Select “Messages” when prompted for what data to move.

Step 4: Enter the OTP code displayed on Android into your iPhone.

Step 5: Hit upload on Android and watch your messages move!

Transferring from Oppo Find N3 Flip to the new iPhone 15/14/13 doesn’t have to be painful. With SIM contacts, Google Photos, SendAnywhere, and other clever tricks, you can make the switch smoothly and focus on enjoying your new phone!

Part V: Transfer Data From Oppo Find N3 Flip To iPhone 15/14/13 in One Click Using Dr.Fone

If you’re shifting from an Android phone to an Apple device, then this is for you! As you get your brand new iPhone 15/14/13, you may wonder how you can transfer all your data in one go to your new phone. This includes all your contacts, photos, apps, and other vital data from your Oppo Find N3 Flip. But don’t worry, for a hassle-free and easy way to transfer your data you can use the incredible Dr.Fone Phone Transfer ! You can quickly and seamlessly transfer all that important stuff to your slick new iPhone 15/14/13 in no time. So, let’s get right into it and see how you can transfer data from Oppo Find N3 Flip to iphone 13!

First thing first, get your Oppo Find N3 Flip and new iPhone 15/14/13 ready them sufficiently charged during the transfer process.

Dr.Fone’s phone transfer feature makes switching data from Oppo Find N3 Flip to iPhone easier than you can imagine. Just follow these simple steps:

Dr.Fone - Phone Transfer

1 Click to Transfer Data From Oppo Find N3 Flip To iPhone

• Move data between devices with different OSs, i.e. iOS to Android.
• Transfer contacts, SMS, photos, videos, music, and more types.
• Simple, click-through process
• Compatible with the newest Android and iOS system.

3981454 people have downloaded it

Step 1: Download and install the Dr.Fone software on your Windows PC or Mac computer. Head to the official website drfone.wondershare.com and get the version compatible with your computer’s operating system. Installation takes just minutes.

Step 2: Use the USB cables provided with your Oppo Find N3 Flip and iPhone to connect both phones to your computer. Dr.Fone will automatically recognize the two connected devices. Make sure to enable USB debugging on the Android device first.

Step 3: Launch the Dr.Fone app on the computer and click on the “Phone Transfer” module. The user-friendly phone switch interface opens up, ready to shift your data.

Step 4: Select your Oppo Find N3 Flip as the “Source” and your iPhone as the “Destination”. Click “Flip” anytime to change direction. Also, choose what data types to transfer - contacts, messages, photos, videos, music, etc.

Step 5: Finally, hit the “Start Transfer” button and Dr.Fone will seamlessly shift the selected data from Oppo Find N3 Flip to iOS. The progress is displayed on screen.

And that’s all it takes! In minutes, Dr.Fone securely transfers your essential data making your switch to the iPhone a breeze. Quick, hassle-free, safe - phone transfer doesn’t get easier than this!

So go ahead – move your life to your terrific new iPhone 15/14/13 in minutes with the exceptional data transfer powers of Dr. Fone’s Phone Transfer tool! Bid goodbye to manual processes or slow wireless transfers. For swift, simple, and safe Android to iOS transfer, Dr Fone is your go-to digital companion!

Conclusion

Transferring your precious data to a new iPhone 15/14/13 doesn’t have to be a headache. With smart use of your SIM card, cloud storage apps like Google Photos, file transfer apps like SendAnywhere, or sophisticated switchers like Dr.Fone , you can seamlessly move your contacts, photos, media files, chats, and more from Android to iPhone. Whether you want to transfer a few vital files or the whole data - music, movies, documents and all - you now have several failure-proof methods to choose from.

So go ahead and make the switch to that new iPhone 15/14/13 without compromising any precious data. Use these time-tested techniques to swiftly move key files like WhatsApp data, photos, contacts, and different types of files from Samsung or any Android to your Apple device. Give your new iPhone a rousing welcome by easily transferring all that Android data!

5 Ways to Move Contacts From Oppo Find N3 Flip to iPhone (13/14/15)

Android smartphones certainly have a lot to offer when it comes to communication. Each device features functional messaging and phone call applications that keep you in touch with other people. The same thing goes for Apple devices, particularly the iPhone 13, 14, and 15. These models are equipped with almost everything you need to send text messages through traditional channels or the internet. It’s fair to say that both Android and iOS smartphones are great in this regard. But if you’re looking for a change, switching to the latter is definitely an excellent choice.

Data migration nowadays is very advanced. Hence, copying your contacts between two mobile devices with different operating systems is indeed a piece of cake. All you need to do is find the right method that works pretty well in your current situation. Initiate each step and complete the entire procedure. For sure, it will only take a few minutes to get everything done.

In this article, we will provide some methods on how to transfer contacts from Oppo Find N3 Flip to iPhone (13/14/15). Continue reading below to learn more.

You can watch the video below to transfer contacts from Oppo Find N3 Flip to iPhone with ease

Part 1: Can You Move Contacts From Oppo Find N3 Flip to iPhone (13/14/15)?

There’s no denying that the phonebook is one of the most important files on our mobile phones. Without this, it will be much harder to communicate with others who don’t use the internet for messaging and calls. That’s why it’s highly recommended to prioritize the contact list when initiating sensitive procedures like phone transfers. You must do your best to keep the files safe while the process is ongoing.

Is it really possible to move contacts from Oppo Find N3 Flip to iPhone (13/14/15)? The short answer is absolutely yes. There are many tutorials out there that can definitely teach you how to transfer contacts from Oppo Find N3 Flip to iPhone. Don’t worry. All of them are very simple to conduct. Neither advanced skills nor high-end equipment is required to complete the procedures successfully. Just settle on a specific technique that perfectly suits your needs.

Another thing, you can certainly move contacts from Oppo Find N3 Flip to iPhone (13/14/15) without worrying about security. The data transfer methods today are mostly private and confidential. If there are phone transfer tools involved, you can be sure they implement the highest form of security protocols. That’s why don’t be afraid to move your contacts from one device to another. Just choose the right guide on how to transfer contacts from Oppo Find N3 Flip to iPhone. You’ll be just fine.

Part 2: 5 Tips on How to Transfer Contacts From Oppo Find N3 Flip to iPhone (13/14/15)?

As previously mentioned, it’s very simple to move your contacts from Oppo Find N3 Flip to iPhone (13/14/15). There are numerous ways to do that in easy steps. Five of them are enumerated below. Check each tutorial on how to share contacts from Oppo Find N3 Flip to iPhone and find the best one for you.

Method 1: Move contacts from Oppo Find N3 Flip to iPhone (13/14/15) via SIM card

Do you store your contact list on your SIM card? If so, moving them to your new mobile device is indeed a walk in the park. Just insert the SIM card from your Oppo Find N3 Flip into your iPhone. After that, copy the contact information to the local storage of your new smartphone. Don’t sweat it. You can do it in easy steps. Here’s how to transfer contacts from Oppo Find N3 Flip to iPhone via SIM card.

• Step 1: After inserting the SIM card into your iPhone, go to Settings.
• Step 2: Click Contacts.

• Step 3: From there, click Import SIM Contacts.

Method 2: Move contacts from Oppo Find N3 Flip to iPhone (13/14/15) using Move to iOS

Move to iOS is an Android mobile application that aids in the data transfer between an Android and iOS device. It can absolutely help you migrate your contacts from your Oppo Find N3 Flip to your iPhone with little to no effort. Here’s a short guide on how to transfer contacts from Oppo Find N3 Flip to iPhone (13/14/15) using Move to iOS.

• Step 1: Install the Move to iOS application on Google Playstore. Launch it afterward on your Oppo Find N3 Flip.
• Step 2: Start configuring your new iPhone. On the App & Data screen, click Move Data From Android.

• Step 3: Going back to your Android smartphone, click Continue.

• Step 4: Read the Terms and Conditions. After that, click Agree to proceed.
• Step 5: On the Find Your Code page, click Continue.

• Step 6: Check the code on your iPhone and then enter it on your Oppo Find N3 Flip. Right after, choose the data you want to transfer. Then, click Next to start the process.

Method 3: Move contacts from Oppo Find N3 Flip to iPhone (13/14/15) via Google

Do you have a Gmail account? If so, you can use it to sync your Android contacts with your iPhone. Don’t worry. It’s a very easy procedure. In fact, you can do it even with one eye closed. Here’s how to transfer contacts from Oppo Find N3 Flip to iPhone (13/14/15) using your Gmail account.

• Step 1: First and foremost, make sure your contacts are backed up to your Google account. After that, launch the Settings app on your iPhone.
• Step 2: Click Mail.

• Step 3: Click Accounts.
• Step 4: Click Add Account. Then, choose Google.

• Step 5: Log in to the Gmail account that contains your contact backup. After that, toggle on the radio radio next to Contacts.

Method 4: Move contacts from Oppo Find N3 Flip to iPhone (13/14/15) via iCloud

You can use iCloud to move your contacts from Oppo Find N3 Flip to iPhone (13/14/15). All you need to do is export the vCard from your Oppo Find N3 Flip and then import it to iCloud. From there, you may sync your iPhone with iCloud to access and store the contacts in your local storage. Here’s how to transfer contacts from Oppo Find N3 Flip to iPhone via iCloud.

• Step 1: Assuming you have already exported the vCard and downloaded it from your Android smartphone. Now, it’s time to import the file to iCloud. Using a computer, launch the Browser application and then go to icloud.com.
• Step 2: Sign in using the Apple ID that is currently logged in to your iPhone.

• Step 3: Click the Contacts icon.

• Step 4: Click the + icon below the Profile button.
• Step 5: Choose Import Contact. Then, select the vCard.

• Step 6: Make sure your iPhone is syncing the contacts with iCloud. If so, check the newly imported files on the Contacts app.

Method 5: Move contacts from Oppo Find N3 Flip to iPhone (13/14/15) using Wondershare Dr.Fone

The first four data migration methods are very helpful. It provides an effective solution to move contacts from Oppo Find N3 Flip to iPhone (13/14/15). But if you wish to explore a more convenient alternative, Wondershare Dr.Fone has something to offer. Its phone transfer feature is equipped enough to facilitate contact migration within a few minutes. Here’s how to transfer contacts from Oppo Find N3 Flip to iPhone using Wondershare Dr.Fone.

• Step 1: Download Wondershare Dr.Fone from its official website and then install it on your computer.
• Step 2: Launch the newly installed Wondershare Dr.Fone on your desktop. After it fully loads up, connect your two smartphones using their supplied data cables.
• Step 3: Access the left-side panel and then click Toolbox. Head over to the main dashboard and then click Phone Transfer.

• Step 4: Nominate your Android smartphone as the Source and your iPhone as Target. Alternatively, click Flip to modify the direction of the transfer according to your preference.

• Step 5: Select Contacts as the category. Right after, click Start Transfer to proceed.

Click here


• Step 6: Wait while Wondershare Dr.Fone is facilitating the transfer. Should you wish to terminate the progress midway, simply click Cancel.

• Step 7: After completing the process, click OK to wrap it up.

EXTRA TIP: How to Back Up Your Contacts?

As a safety measure, it’s best to back up your contacts first before the transfer. Don’t worry. Wondershare Dr.Fone has made it simpler for everyone. Here’s a short guide on how to use it in easy steps.

• Step 1: Launch Wondershare Dr.Fone on your computer. Right after, connect your Android smartphone using a data cable.
• Step 2: Click My Backup on the left-side panel. Then, click Back Up Now on the main dashboard.

• Step 3: Follow the on-screen instructions for SMS backup. After that, click OK to continue.

• Step 4: Wait while Wondershare Dr.Fone is backing up your contacts.

• Step 5: After completing the process, click Open in Folder or View Backups to review the files.

Conclusion

Truly, it’s now very easy to move contacts from Oppo Find N3 Flip to iPhone (13/14/15). The five data migration tactics provided above are proof that you can do such procedures with little to no effort. Choose one from the given list and initiate the steps in case you need to copy your phonebook from one device to another. If you prefer the most convenient option, opt for Wondershare Dr.Fone. It has a powerful phone transfer feature that can absolutely help you move contacts from Oppo Find N3 Flip to iPhone in no time. Download the application for free and take advantage of its amazing functions.