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Get mobile data working again with these troubleshooting tips
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Cellular data allows you to have internet access anywhere you go. Sometimes, your phone may not connect to cellular data when you need it. Luckily, there is usually an easy fix. This wikiHow article teaches you how to troubleshoot your cellular data not working, featuring expert advice from Phone Repair Specialist James Bell.

Cellular Data Not Working: Quick Fixes

Make sure you are in an area with cellular data coverage and confirm your cellular data plan. Restart your device, eject your SIM card, and reinsert it. Make sure cellular data is on, and Airplane mode is off. Check your cellular data settings.

3

Check if cellular data is enabled.

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  1. You can turn mobile data on or off using the Quick Access menu on Android or the Control Center on iPhone and iPad. Use one of the following steps to ensure mobile data is turned on.
    • Android: Swipe down from the top of the screen twice to open the Quick Access menu., then tap the Mobile data icon to toggle it on or off. You may need to scroll to the second page of icons to find it.
    • iPhone & iPad: Swipe down from the upper-right corner to open the Control Center, then tap the radio antenna icon to toggle cellular data on or off.[1]
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4

Resync your SIM card.

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  1. According to Phone Repair Specialist James Bell, you can often fix network connection issues by resetting your SIM card. "You don't even have to take out the SIM card," he says, "just hit the eject button with the provided SIM ejector that came with it." Ejecting your SIM card and reinserting it forces your phone to synchronize with your phone. The SIM card tray is usually on the side, top, or bottom of your phone, and it generally has a pinhole in it. Insert a paperclip or the SIM removal tool that came with your device to eject the SIM card tray, inspect the SIM card to make sure it's not dirty or damaged, and then reinsert it.
    • Bell finds that this quick trick fixes cellular data problems about 30% of the time.
    • This won't work if you have an eSIM.
    • If the SIM seems dirty, you can clean the SIM with a pencil eraser, cotton swab, or a lint-free cloth.
    • If your SIM card is damaged, you will need to get a new one from your wireless carrier.
5

Turn your phone off and back on.

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  1. "I know it's a simple one, but it helps a lot," Bell says. "A lot of people do not turn their phones off, and the phone never gets a chance to turn off and rest or debug." You can usually fix minor glitches by force restarting your phone.
    • Android: Press and hold the Power button until your phone shuts off. It will then restart.
    • Samsung Galaxy: Press and hold the Volume Down and Power button until your phone restarts.
    • iPhone 8 and later: Press the Volume Up button and then press the Volume Down button. Then press and hold the Side/Sleep button until the Apple logo appears.[2]
    • iPhone 7: Press and hold the Volume Down and Side/Sleep button until you see the Apple logo appear.
    • iPhone SE, 6, and below: Press and hold the Side/Sleep button and the Home button until the Apple logo appears.
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7

Turn off Wi-Fi.

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  1. Normally, when your phone is connected to Wi-Fi, it does not use cellular data. This can be a problem when your phone fails to switch over to cellular, such as when you are just barely in range of your Wi-Fi network and unable to get a strong signal. Turning off Wi-Fi ensures that your phone connects to cellular data instead of Wi-Fi.
    • To turn off Wi-Fi, swipe down from the top of the screen on Android or the upper-right corner on iPhone and iPad, then tap the icon that resembles arching lines over a dot to toggle Wi-Fi on and off.
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9

Update your network settings.

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  1. Just like your phone's operating system needs to be updated, your carrier's network settings must also be updated occasionally. Usually, this happens automatically. However, if you don't have automatic updates enabled, or the update fails for whatever reason, you may need to do it manually.
    • Android: Swipe down from the top of the menu and tap the Gear/Settings icon in the upper-right corner. Tap Connection (Samsung Galaxy) or Network & internet (stock Android). Tap Internet (stock Android) or More Connection Settings (Samsung Galaxy). Tap Carrier settings if available. Then tap Update Profile.[3]
    • iPhone & iPad: Open the Settings app and tap General followed by About. If an update is available, you will be prompted to tap Update.[4]
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10

Reset your network settings.

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  1. Resetting your network settings will revert your network settings to their default. Your phone will reconnect to your cellular network automatically. However, be aware that this will also erase your Wi-Fi connection, Bluetooth pairings, and any saved Wi-Fi passwords. Use one of the following steps to reset your network settings:[5]
    • Android: Swipe down from the top of the menu and tap the Gear/Settings icon in the upper-right corner. Tap System (stock Android) or General Management (Samsung Galaxy). Tap Reset or Reset options. Tap Reset Wi-Fi, Mobile, & Bluetooth (Stock Android) or Reset mobile network settings (Samsung Galaxy).
    • iPhone: Open the Settings app and tap General. Tap Transfer or reset iPhone and then tap Reset. Tap Reset Network Settings and follow the prompts.
12

Factory-reset your phone.

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  1. This is generally the last resort when it comes to phone problems. This will erase all data on your phone and restore it to its default factory settings. Make sure you back up all data on your phone you want to keep.
    • Android: Swipe down from the top of the menu and tap the Gear/Settings icon in the upper-right corner. Tap System (stock Android) or General Management (Samsung Galaxy). Tap Reset or Reset options. Tap Erase all data (factory reset) or Factory data reset and follow the prompts.
    • iPhone: Open the Settings app and tap General. Tap Transfer or reset iPhone and then tap Reset. Tap Reset all settings and follow the prompts.

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About This Article

James Bell
Co-authored by:
Phone Repair Specialist
This article was co-authored by James Bell and by wikiHow staff writer, Travis Boylls. James Bell is a Phone Repair Specialist at Phone Techs in Winchester, California. With over seven years of experience, he specializes in cell phone, tablet, game console, and PC repairs. Phone Techs is an Akko Partner.
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Updated: October 30, 2024
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