I have a Samsung Galaxy S4 LTE working on Lollipop and I completely lost the 3G and 4G signals. I can only use the 2G signal.
- When I choose in the network options (Only HSPA) there's a stop like circle appearing instead of the signal scale up there.
- I tried the factory reset, but it didn't work.
- I also downgraded to Android 4.3 but the problem persisted.
What should I do?