I have a maker phone that cannot register on any mobile carrier network to make a call or text. I have tried multiple sims with the same result. The phone will either not recognize the sim, just says loading or flashes in and out of signal.
For the record, I have verified that I am inserting the sim correctly with the notch facing top left away from the unit.
If I am able to get the sim to be recognized, I am able to get a list of providers with the sim debug tool. However, the icon on the home screen just says loading.
The signal strength will be from 0-20 and occasionally 99, but mostly 0. I have reseated the antenna and 4G network card with no change.
I have tested with an Ultra-mobile sim, that works in a Samsung, a Simple mobile sim that works in a Samsung and my T-mobile sim that works in a Pixel 3.
I have done multiple resets and setup wizards and traveled to where the cell towers are near my location and tested all the sims with no successful result until the battery died.
I have been able connected to Wifi and downloaded any updates, however it was already at version 1.0.1.
This phone was already sent in for a “faulty IC on the mainboard” and repaired shipped back half-way around the world.
Any help will be appreciated.