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ctjack

macrumors 68000
Original poster
Mar 8, 2020
1,518
1,540
I got two 12 minis from my carrier. Strange thing is that one has 2 bars and sometimes loses connection in my house, while the second mini does have 1 bar and loses the signal to 0 more often than the first one. Never did the field test but planning to do so.

Interestingly, the one that shows 2 bars and even 5g, sometimes able to hit 20mbps on speedtest(15% runs fine/85% fails with loss of signal).
Second one with 1 bar and 4g only, was able to pass speedtest probably only 7% out of 100%.
Yellow tint seems to be no issue on both.
Both batteries at 100% health level and above designed capacity even though they are from Oct-Nov 2020.

Questions:
1) Why the same iphones have different signal strength? I know that the bars are not the actual indicator, so where could i check for -dbms in an iphone?
2) Which other flaws (ex. yellow tint?) can help me to further sort out the phone i need to keep?

Thank you!
 
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