Since you understand this stuff up to a certain extent, is it possible for you to explain why my android device's tower reception signal bars continued to fluctuate despite having removed my sim for over a month?
One guy at a phone shop appeared to suspect me of being mistaken and told me that android devices just show full bars by default when a sim is removed.
also, are sim cards which don't seem to contain much (and can easily be replicated with a tiny i.c as part of the cpu or any other component on the motherboard) only for the sake of i.d and network operator relationship whereas phones are directly able to communicate via imei?
Here's a video i managed to record later when it started jumping about despite having no sim card inserted and therefore no known relationship with any specific network signal tower:
Zuckerberg's recent contracts with asian countries to connect without showing any data consumption has me concerned.
JazakAllahu khayran in advance.