iOS 4.1 Brings Field Test Mode Back to the iPhone

Posted September 8, 2010 at 8:15pm by iClarified | Please help us and submit a translation by clicking here | 13959 views

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.

Read More



Share
Add Comment
Hater - September 9, 2010 at 1:20pm
Works on 3.1.2 JB
KnightHawk - September 9, 2010 at 7:58am
\"For example -10 is much stronger then -100\" blunder! its stronger THAN you idiot editor!
Matt - September 9, 2010 at 7:41pm
Sorry, they\'re human. They make mistakes too.
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
Neilh - September 9, 2010 at 6:46am
Got -65 sitting next to my macrocell. Usually shows five bars.
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
neilh - September 8, 2010 at 9:39pm
Didn\'t work for my or a buddy of mine!?
neilh - September 8, 2010 at 9:40pm
Somehow got it to work this time :)
0 More Comments
Follow iClarified
Last Chance to Restore for a Jailbreak on iOS 7.1.2
With the release iOS 8 approaching, you will ...
The Ultimate Apple iPhone 6 Plus Review Roundup [Video]
A roundup of Apple iPhone 6 Plus reviews from...
The Ultimate Apple iPhone 6 Review Roundup [Video]
A roundup of Apple iPhone 6 reviews from acro...
Mint Personal Finance App Now Lets You Use Touch ID as Your Passcode
The Mint Personal Finance app has been update...
Apple Posts Guide on Moving Content from Android to iPhone
Apple has posted a support document on moving...