Mobile data (mostly) stopped working

[zulban]

A few months ago my mobile data stopped working. It will rarely (very rarely) work, but usually not. When I turn on mobile data, the mobile carrier logo in the system bar is a solid right angle triangle - no plus, no LTE, no 3G, just a triangle. When mobile data is off there's an X next to the triangle. My setup:

Moto G Falcon

LineageOS 14.1

Android 7.1.2

My PM mobile data has worked perfectly on this exact hardware/OS for maybe a year. I didn't change any settings as far as I can remember when the problems started. Before this, my Moto G had Cyanogenmod which also worked perfectly fine with data. I would frequently turn on/off my mobile data and it worked. Text/chat/wifi has always worked perfectly. Phone seems very stable.

I have tried: I have lots of unused data from my add-ons when I check online. Restarted phone plenty. Mobile data is turned on, not in airplane mode. After the problems, I "reset my APN settings to default" after the problems but it did nothing (and I think those settings were already default).

What other information can I gather to get to the bottom of this? Is it PM, is it me, is it my hardware? I can do anything technical if pointed in the right direction.

Cheers

[zulban]

Thanks for the thread. I had done a search but didn't find that one.

Something in that list fixed my issue. I'm glad I didn't have to do anything more dramatic like a system upgrade/reset or network reset (again).

For future visitors, this is what I did from that thread:

• Added that new APN (despite current APN settings having identical settings).
• Hard shut down, removed sim. Startup, turned off wifi and turned on mobile data. Hard shut down, put sim back.
• Deleted my custom APN, set back to what it was.
• Toggle airplane mode.

After airplane mode I saw the 3+ symbol appear. So it goes.

Thanks for the help @LEGO and @Luddite !

[LEGO · Accepted solution]

Please, check solution in this tread “No Mobile Data Since Upgrade to Android Nougat”

[zulban]

Good questions. I very rarely use my mobile data. Maybe once a month I'll want a map (which wasn't saved offline) or there's some important reason to check my email. So yes this has been bugging me for a few months, but not bugging me much.

Like many phones, it seems to update itself periodically. I would narrow down a patch for you except I don't know exactly when I started having problems. This problem wasn't the result of me manually updating anything though, or agreeing to update anything.

[LEGO]

Were there any updates done before problem started?

Why you have not contacted Community few months ago?