Phone not connecting to network

[TruffleP20]

Help! My phone has not been connecting to the network for the past few weeks, anywhere I go. 

Symptoms include:

• Not being able to make or receive calls or texts
• Apps not being able to connect to the internet

All the while my phone shows full/near full signal strength and a 4G connection. 

I've tried a number of technical support options that have had me:

• Turn mobile data off and on
• Reset network settings
• Manuallys select a nework
• Reset my APNs
• Disable any VPNs
• Carry out a soft reset
• Carry out a full factory reset

I've also checked that the apps all have permission and my data allowance is sufficient.

My device is a Huawei P20 Pro.

Any advice how I could fix this? This is my last resort before getting a new phone.

Thank you!

[bristolian]

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@TruffleP20 wrote:

When I try and call out my screen says dialling but I get no ring tone and the device I'm calling gets no notification.

As I look at it currenty there is no VoLTE symbol.

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Does your device have any options in the menus for locking to 2G/3G or disabling 4G?

If so, it would be an interesting test to see what effect this produces. It may not alter the end result, but if you're not seeing a VoLTE symbol then there's little to lose by trying.

[TruffleP20]

Hi @Chris_B , thanks for the advice.

Tried a full factory reset, rebooting from scratch (no backup), this morning. Unfortunately no luck. 

Do you have any guides for how to do a full OS reinstall?

[TruffleP20]

Hi @bristolian , I tried a manual network selection on to EE(3g) but no luck unfortunately.

Anything else you would suggest?

[Chris_B]

@TruffleP20  Have a read of THIS.
 you need to download that software so you can install a fresh version of the OS on your device. 

if this doesn’t work then the device is faulty.