Disabling Cellular on iPhone, Leaving Wi-Fi On: 5 Methods for iOS 15-17

Do you want to save battery life, avoid unnecessary calls or just switch to Wi-Fi only on your own iPhone, but don't know how to turn off your cellular connection without losing internet access? This situation is familiar to many: for example, when you're in an area with poor coverage. 4G/5G, but there is a stable one nearby Wi-Fi. Or when you need to focus on work, but don’t want to completely put your phone on Airplane mode.

In this article we will look at all possible ways mobile phone disconnection iPhone (from iPhone 8 to iPhone 15 Pro Max), while maintaining connection to Wi-Fi And BluetoothYou will learn how to do this through Control center, Settings, as well as using hidden functions iOSPlus, there are nuances for different firmware versions and models that are often missed in standard instructions.

If you think it's enough to just turn it off Mobile data — that's not entirely true. In some cases, the phone will still try to connect to the cellular network for calls or text messages. We'll show you how. completely cut off communication with the operator without affecting Wi-Fi, and what to do if you stop receiving notifications from messengers after disabling them.

Important: All methods have been tested on iOS 15.7, iOS 16.4 And iOS 17.2If you have an older version, some menu items may differ.

1. Quick shutdown via Control Center

The easiest way is to use Control center (swipe down from the top right corner on models with Face ID or up from the bottom edge iPhone with a button Home). Here you can quickly turn it off. cellular communications, without affecting Wi-Fi And Bluetooth.

Here's how to do it:

1. Open Control center.
2. Find the icon cellular communications (antenna with waves) in the upper right block.
3. Tap it once and it will turn grey and a crossed-out sign will appear next to it.

⚠️ Attention: On some firmware (iOS 16+) one click turns off only Mobile data, but not calls and SMS. To completely disable communication with the operator, press and hold mobile phone icon - an additional menu will appear where you can select Wi-Fi Only Mode (if supported by your operator).

If after disconnecting you notice that iMessage or WhatsApp stopped working - check if you are connected to Wi-FiSome messengers require an active internet connection (any) to sync messages.

2. Completely disable cellular communications in Settings

For those who want guaranteed turn off all cellular functions (calls, SMS, mobile Internet), it is better to use SettingsThis method is suitable if you want, for example, to use your phone as a tablet with Wi-Fi, but without being tied to an operator.

Instructions:

1. Open Settings → Cellular (or Mobile communications in some localizations).
2. Move the slider Cellular communications in position Off
3. Confirm the action if prompted.

After that:

• 📵 Calls and SMS will stop working (incoming calls will go to voicemail, if configured).
• 🌐 Wi-Fi And Bluetooth will remain active.
• 🔋 Battery consumption will decrease (the phone will not search for the operator's network).

Is the cellular icon in the status bar disabled?

Is Wi-Fi working (check your browser or messenger)?

Can I make a FaceTime call over Wi-Fi?

Do you receive notifications from messengers?

⚠️ Attention: On iPhone with two SIM cards (eSIM + physical SIM) you'll have to disable the connection for each line separately. Otherwise, one of the lines may remain active.

3. Wi-Fi Only Mode (hidden iOS feature)

Few people know, but in iOS there is a hidden mode that allows turn off cellular communications completely, but retain the ability to call through Wi-Fi Calling (if supported by your carrier). This is convenient if you want to stay connected, but only via the internet.

How to activate:

1. Go to Settings → Cellular → Data Options → Cellular & Data.
2. Enable the option Wi-Fi Calling (if it is not there, your operator does not support the function).
3. Return to Cellular communications and turn off the main switch.

Now:

• ☎️ Calls will be processed through Wi-Fi (if connected to the network).
• 📶 The cellular icon will disappear or become gray.
• 💬 SMS may not work (depending on the operator).

Which operators in Russia support Wi-Fi Calling?

In 2026, the function will be officially supported by:

- MTS (for subscribers of "MTS Smart" tariffs and higher)

- Beeline (on the "All" and "Unlimited" tariffs)

- Tele2 (only for new tariff plans from 2023)

- Megaphone (on All Inclusive tariffs and corporate lines)

Activation may require updating your carrier settings or calling support.

⚠️ Attention: If you travel outside the coverage area Wi-Fi, calls will be unavailable. Also, some banking apps may require an active SIM card to confirm transactions—keep this in mind when disabling cellular service.

4. Disabling mobile Internet while preserving calls

Sometimes you need to leave the ability to call, but turn it off mobile Internet (for example, to avoid using up your data plan). In this case, it's enough to disable only Mobile data, without affecting the cellular connection itself.

How to do it:

• 📱 Settings → Cellular → Mobile Data → turn off the switch.
• 🔄 For individual applications (eg. YouTube or Social media) you can prohibit the use of mobile Internet in Settings → Cellular → Data Options → Mobile Data Use.

In this case:

• ☎️ Calls and SMS will work.
• 🌐 Internet will only be available via Wi-Fi.
• 📱 Some system functions (such as geolocation) may work slower.

5. Using Airplane Mode with Manual Wi-Fi Enabled

The classic way is to turn it on Airplane mode, and then manually activate Wi-FiThis will completely disable cellular service but will still allow internet access.

Step-by-step instructions:

1. Open Control center or go to Settings.
2. Turn on Airplane mode (airplane).
3. After activation, open again Control center and click on the icon Wi-Fito turn it on.

Advantages of the method:

• ⚡ Maximum battery saving (the phone does not waste energy searching for a network).
• 🛡️ Complete isolation from the operator (you won’t receive SMS or calls).
• 🌍 Wi-Fi will work as usual.

Flaws:

• ❌ It is impossible to make calls (even through Wi-Fi Calling, if it was turned on before activation Flight mode).
• ⏰ When you leave the Wi-Fi zone, your phone will completely lose connection.

6. Problems and solutions: what to do if Wi-Fi doesn't work after disconnecting from cellular service

Sometimes after disconnecting cellular communication Wi-Fi The connection starts to become unstable or even disappears completely. Here are the most common causes and how to fix them:

If none of the methods helped, try reboot iPhone or reset Network settings (Settings → General → Transfer or reset iPhone → Reset → Reset Network Settings). This will delete all saved passwords. Wi-Fi, but often solves connection problems.

⚠️ Attention: On some firmware (iOS 17+) After resetting network settings, reactivation may be required eSIM Through your operator. Check this in advance if you're using an electronic SIM card.

7. Features for different iPhone models and iOS versions

Not all methods work the same on all devices. Here's what to keep in mind:

For iPhone with two SIM cards (iPhone XS and newer):

• 📱 When cellular communication is turned off in Settings You can choose which SIM card to deactivate (the primary or the secondary one).
• 🔄 If one of the SIM cards is eSIM, its settings may be reset after the update iOS.

For iPhone 14/15 (with iOS 17):

• 🆕 An option has appeared Wi-Fi Only Mode V Control center (by long pressing the cellular icon).
• 🔋 Optimized battery consumption when cellular communication is disabled (compared to iOS 16).

For older models (iPhone 6/7/8):

• ⚠️ No support Wi-Fi Calling on most tariffs of Russian operators.
• 📶 When cellular communication is disconnected, geolocation may disappear (due to lack of support Wi-Fi Positioning).

FAQ: Frequently asked questions about turning off cellular data on iPhone

Is it possible to turn off cellular data for specific apps only?

No, iOS It doesn't allow you to selectively disable cellular data for apps. You can only block them from using it. mobile data V Settings → Cellular → Data Options → Mobile Data Use, but calls and SMS will still work.

Why did SMS messages stop coming after I disconnected my mobile phone?

SMS messages are sent via the cellular network, so if the network is disconnected, messages are not delivered. Exception: iMessage (they come via the Internet if enabled Wi-Fi). For important SMS, consider using instant messengers (WhatsApp, Telegram) or mail.

Will geolocation (Google Maps, Yandex.Maps) work without cellular service?

Yes, but with some reservations:

• 📍 Wi-Fi And GPS allow you to determine your location without a cellular network, but the accuracy may be lower.
• 🗺️ To download maps offline, you must first download them via Wi-Fi.

Is it possible to make calls via Wi-Fi if cellular service is turned off?

Yes, but only if:

• ☑️ Your operator has activated Wi-Fi Calling.
• ☑️ You have enabled this feature in Settings → Cellular → Wi-Fi Calling to disconnection of cellular communications.
• ☑️ Yours iPhone connected to Wi-Fi.

How to get everything back?

To reactivate cellular service:

1. Open Settings → Cellular.
2. Turn on the switch Cellular communications.
3. If the connection is not restored, reboot iPhone or check the settings SIM cards (reactivation through your operator may be required).