Loss of phone signal - Phone fails to search for signal again

ive switched to CM13 and loving this phone... one gripe though..

on stock MIUI and CM, if i lose signal (usually 4g, running 1 sim) i will often stay with "no signal" for hours, unless i go into airplane mode and toggle on and off to force the phone to search for signal.

I've looked through all the settings and haven't found anything that could be causing it. I have it set to search for 4g first, then 3g, 2g.

I have the sim in tray 1 as well, but i highly doubt that could be causing issues.

I'm on Optus (Australia) and realize all bands arent supported out of the box, but the phone has 4g/3g signal where i am, it's just not looking for it.

Any ideas ?

Sudden Loss of Signal

I was playing Pokemon GO when an exclamation mark appeared on my signal.

Since then, I haven't been able to send a message or internet connectivity.

I have tried resetting the phone, taking the battery out, removing sim, toggling airplane mode on and off, resetting APNs etc. Nothing. Even checked to see if provider has an outage, nope.

What I noticed is, it's like it's disabled. When you turn on the phone, the exclamation mark is instantly there.

What could be the issue? Sudden exclamation mark when everything was running perfect with no changes.

Regarding unlocking my phone without data loss

Hi All
I am using one plus one with cm 13. I forgot the pattern to unlock. Is there any way to unlock the pattern and login to the phone.

I tried to copy the data but I am not able to copy since the screen is locked.

I have tried to lock using Android Device Manager but that is also asking for pattern to enter the password.

Since I have not enabled the developer mode .. I am not able to use adb commands also ...

I am able to use the fastboot mode, but from that mode, I am not getting any option to unlock ..

Can you pls help to unlock the phone or copy the data before doing factory reset..

Thanks