3G & LTE Not Working on iPhone 6 and 6 Plus: How to Fix It

iPhone 6 and iPhone 6 Plus users have had to face plenty of terrible bugs such as, touchscreen being suddenly unresponsive, Camera app getting freeze etc. There could be many reasons of such unexpected issues including software glitch.

Of late, many iPhone 6/6 Plus users have reported 3G & LTE connectivity issue on their devices. They have done everything possible but this issue hasn’t been resolved. So, what’s the fix to this 3G & LTE issue? How can it be solved?

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3G-LTE Not Working on iPhone 6 and 6 PlusIf you are also one of the iPhone 6 users and encounter this carrier issue, here are some quick solutions which may resolve the issue with immediate effect. Let’s check out!

Check Your Cellular Connection

Check your cellular connection to make sure everything is fine with it.

Step #1. Launch Settings app.

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Step #2. Tap on Mobile.

Tap on Settings then Mobile on iPhone
Step #3. Switch on Mobile Data and Enable LTE.
Turn On and Turn Off Mobile Data on iPhoneTurn Mobile Data on/off a few times. It might solve the issue immediately.

Turn On Airplane Mode

Turning on Airplane Mode and then turning it off after a few seconds might solve the 3G or LTE connectivity. To do so; launch Settings app → switch on Airplane Mode.

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Turn On Airplane Mode on iPhone

Remove the SIM Card/Restart Your iPhone

Sometimes, restarting your phone can automatically fix a few issues. Let’s see if it can help.

Step #1. Power down your iPhone.

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Step #2. Remove the SIM card and reinsert it.

Step #3. Restart your phone: Press and hold on the sleep/wake button and when the red slider appears drag it to switch off your device.

Step #4. After a while, press and hold on the sleep/wake button to switch on your iPhone.

Turn Off SIM PIN

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Turn off SIM PIN, if you have accidentally enabled it. SIM PIN is used to prevent access to cellular data network. If you want to use cellular data, you need to enter the PIN when you swap SIM cards or happen to restart your iPhone or iPad (Wi Fi + Cellular Models) . One thing is to be remembered, it applies to devices that works with SIM card.

Step #1. Launch Settings app.

Step #2. Scroll down and tap on Phone.

Phone App Settings in iPhoneStep #3. Tap on SIM PIN.

iPhone SIM Pin SettingsStep #4. Switch off SIM PIN.

Note: There are some carriers which provide default SIM PIN enabled with their SIM Cards. You can contact your carrier to check your default SIM PIN.

Reset Network Settings

Resetting Network settings can bring the solution. However, before moving ahead with the process, you should know that resetting the network will remove all the previous settings such as, Wi-Fi passwords, VPN settings, preferred network etc.

Step #1. Launch Settings app.

Step #2. Tap on General.

Step #3. Scroll down and tap on Reset.

Step #4. Tap on Reset Network Settings.

Reset iPhone Network SettingsContact Your Carrier

If you haven’t yet got the solution, you should contact your carrier.

  • Contact your carrier to make sure your account is properly set up and there is no problem with the current data plan.
  • Check out the error messages in the carrier logs.

Carrier Settings Update

Check out if there is any update regarding carrier settings. Carrier setting updates contain small files. The updates can be from both Apple and carrier to carrier settings like, network, cellular data, calling, voicemail settings, messaging, personal hotspot etc. Whenever there is any new update, you may receive notifications.

If a carrier releases mandatory update, it will be displayed only on OK button and not Update Button. It is done to let you know that the particular update was downloaded and installed.

Launch Settings app → Tap on General→ About

iOS Software Update

If there is any latest software update available, update your iPhone. If you use your iPhone’s Personal Hotspot for the internet connection of your computer, then you can update your iPhone wirelessly otherwise connect your computer to another network.

Step #1. Plug your iPhone to power source.

Step #2. Launch Settings app.

Step #3. Tap on General.

Step #4. Tap on Software Update.

Check for iPhone Software UpdateStep #5. Tap on Download and Install.

Step #6. Tap on Install.

Restore Your iPhone As New

If all the above mentioned solutions and tricks haven’t fixed the issue, restoring your iPhone can work as the last resort. Before moving ahead, you must back up your device. Restoring your iPhone as new will delete all the media and data and install the newest version of software.

Step #1. Connect your iPhone with Mac or PC.

Step #2. Launch iTunes.

Step #3. Select your iPhone from the left menu.

Step #4. Click on Restore iPhone.

Step #5. Click on Restore and Update to confirm

Restore iPhone using iTunesHope, this helps you solve problem of 3G and LTE on your iPhone 6/6 Plus. lets know in comments if you find any other solution(s).

Jignesh Padhiyarhttps://www.igeeksblog.com
Jignesh Padhiyar is the founder of iGeeksBlog.com who has a keen eye for news, rumors and all the unusual stuff that happens around iPhone and iPad.


  1. I just switched from AT&T to sprint. I had an android phone before. My network speed in certain places (like my home) is horrible. Will contact sprint tonight.


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