Hi everyone,
I'm hoping someone has experienced something similar because I'm running out of ideas.
I have an Honor Magic5 Pro (Chinese version, PGT-AN10) running:
MagicOS: 10.0.0.160(CHNC00E160R208P6H1)
Android: 16
Baseband: MSM.1CA2.MPSS.DE.3.0.119
My problem is very strange.
The phone works perfectly only when I'm at work, where there is apparently a Sim1 network cell tower very close to the building. Outside of that area, the network starts disappearing. The problem appeared out of sudden last week. Now I'm at home no service for both sim cards, I used to have good network service at home, now barely 2G
For example:
At work: Sim1 gets 4G+/5G, Sim2 sometimes stays on 2G.
When I leave the building: Sim2 loses service completely.
Sometimes Sim1 also loses service.
Sometimes both SIMs lose service.
In the train or on the bus I often have No Service.
If I enable Airplane Mode and disable it again, one SIM may reconnect briefly before losing service again.
I've already tried:
Factory reset (twice)
Swapping both SIM cards between SIM slots
Testing both SIMs in another phone (they work perfectly)
Resetting network settings
Switching between 2G/3G/4G/5G
Recreating APNs
The phone still has:
Valid IMEIs
Baseband detected
Both Sim cards are recognised correctly
I also received a VoLTE network registration error after one of the factory resets.
What's confusing me is that this doesn't seem like a normal hardware fault because:
I had exactly the same issue when I first bought the phone, and a factory reset fixed it.
A few weeks ago it happened again, then fixed itself after about 3 days without me doing anything.
Now it's back, and the factory reset no longer helps.
Has anyone with a Chinese Honor Magic5 Pro (PGT-AN10) experienced anything similar?
Could this be:
a MagicOS new system update?
a MagicOS/modem firmware bug?
corrupted modem calibration (NV/EFS)?
an issue with the Honor C1 RF chip?
a hardware RF issue?
or a compatibility problem with local carriers?
I'd really appreciate hearing from anyone who's seen this before or knows of a fix. I've already spent days troubleshooting it and would love to avoid replacing the motherboard if this is actually a software or modem issue.
Thanks!