How to Fix iPhone 6 Cellular Data Issue Connection Error

By Elizabeth

First Published on July 16, 2018

This article is 7 years old.

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Wifi and cellular network are two things that make your iPhone 6 connected to the internet. Some of us “are forced” to use cellular data, if we are not in the Wi-Fi area, or if the Wi-Fi connection is very slow. Sometimes, we may experience some cellular issues, such as cannot load web pages, cannot send or receive emails, or else. In this article, we will share a couple solutions that may help you to fix this problem. There are two methods, Do it Yourself method and Expert method.

Technobezz disclaimer: Technobezz will not be held responsible for any issues that might appear while trying out this troubleshooting method. If you choose to perform this anyway, you will do that at your own risk.

Before you begin:

Backup your iPhone 6, See — Ultimate Guide How to Backup iPhone 6 and iPhone 6 plus to Mac/PC because some steps can make you lose you iPhone data.
If your iPhone 6 still covered by warranty, you have a full right to report your issue before or after you do a DIY method. Through a genius bar at Apple Store, make a phone call to Applecare or the nearest Apple Authorized Service Provider.

Do It Your self Method

Make Sure:

Make sure that you are still have data package or data contract with your provider by calling them or do a manual check according to your provider.
Make sure you are in the area that is covered by networking for data connection.
If you are using iPhone GSM, make sure to unlock it: Settings >> Phone >> SIM PIN
Go to Settings >> Cellular >> Cellular Data Network. check setting on this screen based on check and adjust settings to the default setting of the provider
Try to use another well function SIM card and has a connection to cellular data well.
Try to apply your SIM card to other iPhone. Does the same issue appears? If it doesn’t, seems that you have to do these following troubleshooting:

iOS Troubleshooting

Go to Settings >> Airplane Mode (swipe it on for at least 15 seconds, then turn it on again).
Turn off cellular data for a while in: Settings >> Cellular Data (swipe it off for 15 seconds, then swipe it on again)
Try to swipe off 3G or LTE and turn it back to on.
By using SIM removal tool, eject SIM card tray and reset SIM card.
On the device, go to Settings >> General >> About to look for a carrier settings update.
Restart the iPhone by pressing and holding the power and home button until iPhone restart.
Power off iPhone by pressing and holding power button for some times until a “slide power off” message appears, then turn it back the iPhone by pressing a power button for seconds.
Reset iPhone Network Settings. Settings — General — Reset — Reset Network Settings. iPhone will restart to do this Reset Network.
Erase all content and settings. Settings — General — Reset — Reset all content and settings.
Restore iPhone. Plug iPhone to Mac/PC then launch iTunes. Tap “Trust” on your iPhone popup message. your iPhone will be detected in the iTunes and on tab summary click restore. Firmware will be download first and wait for the process to be done.

Expert Method

Hardware Troubleshooting and Checking

If you have tried the steps provided above, and if you still experiencing the same issue, and your device is covered by warranty, contact Apple. If your device is not under the warranty, and you read our disclaimer, you can try the hardware troubleshooting.

This problem can be solved if you heat up a part called RF Transceiver which is located on logic board. You can use hot air rework station.

If you have tried the steps provided above, and if you still experiencing the same issue, and if your iPhone 6 is covered by warranty, Apple will give a replacement for your iPhone 6. This is a typical fixing for cellular data issue, a replacement to the new one, if they didn’t do a hardware troubleshooting inside, or they will replace certain part. If you are curious and have read our disclaimer, we will try to give you a general description of what you can do on hardware troubleshooting.

This problem can be solved if you heat up a part called RF Transceiver, which is located on the logic board. Technically, it’s often done by the unauthorized expert technicians by heating that RF Transceiver with certain temperature using hot air rework station.