Users are reporting that iOS 4.1 once again allows you to enter Field Test mode on your iPhone and get a numeric representation of signal strength.
To try this you must first update your iPhone to iOS 4.1 then dial *3001#12345#*.
You'll notice that your signal bars are replaced with numbers. The closer the number to 0 then higher your signal strength. For example -10 is much stronger then -100.
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Comments (7)
Comments are closed for this article.
0
Matt - September 9, 2010 at 7:41pm
Sorry, they're human. They make mistakes too.
0
Guest - September 9, 2010 at 1:20pm
Works on 3.1.2 JB
0
Blacksmp - September 9, 2010 at 12:09am
Signal strength is measured in dbm. Every 3 step is doubled strength. -87 is twice The power compared to -90. And you Will NEVER see -10...
I've gotten -40 as best sitting 10 or so meters directly below The base station antenna
0
Neilh - September 9, 2010 at 6:46am
Got -65 sitting next to my macrocell. Usually shows five bars.
0
Mathieu Galarneau - September 9, 2010 at 12:06am
U can also do it on iOS 4 if JB with SBS toggle under : more-> system option -> numeric gsm
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