Changing SIM card, you can be tracked by cellphone used.

Location can be narrowed down using IMEI triangulation of cell towers the cellphone is closest to.

You will first need to open the Alldaymall tablet and look at the motherboard and copy the board ID number so that you can find the specific firmware.

My Alldaymall A13 MID motherboard ID number was: Q8-V12 and using the website above I searched and found the appropriate firmware.

These numbers (or codes) work on most GSM capable phones, and the i Phone is no exception.

You must tap dial after each number (unless specified differently in the description).

The closer this number is to 0, the stronger the cell signal (or the closer you are to a tower).

The Field Test entries under categories on this page are: "Neighboring Cells" you can see how many cell towers or relays are visible to your i Phone while using GSM (2G).tablet stuck on android screen " data-medium-file=" data-large-file=" class="wp-image-2154" src=" alt="tablet stuck on android screen" width="500" height="375" srcset=" sizes="(max-width: 500px) 100vw, 500px" / The issue is caused by a corrupted or none functioning Android operating system and the only way to get your device back to a functional state is to reflash the original firmware or a compatible version.This will work on any Android tablet with the issue, however it works best with tablets that look like the Alldaymall A13 MID or the Irulu AK304 which we have tested this on and others, it’s a simple matter of finding the correct firmware. A means of connecting the Micro SD card to the PC/a Micro SD Card to USB converter 3.Mode: Field Test You will then be taken to a page providing many current information detailing your cell connection.Note that when you are in this mode, the signal strength bar on the top-left corner becomes a negative number.Mode: Connected Line Presentation You will be shown whether Connected Line Presentation is enabled.