Page 1 of 1
Forum

Welcome to the Tweaking4All community forums!
When participating, please keep the Forum Rules in mind!

Topics for particular software or systems: Start your topic link with the name of the application or system.
For example “MacOS X – Your question“, or “MS Word – Your Tip or Trick“.

Please note that switching to another language when reading a post will not bring you to the same post, in Dutch, as there is no translation for that post!




iPhone - How to get...
 
Share:
Notifications
Clear all

iPhone - How to get your phone in "Field Test Mode"?


 Hans
(@hans)
Noble Member Admin
Joined: 8 years ago
Posts: 2018
Topic starter  

Normally you see just bars on your iPhone to indicate signal strength ... well, it's a pretty rough (and unreliable) scale when you're testing signal strength.

You can however see your signal in dB (and a LOT more info) when you're going in to field test mode.

On your phone dial the following number (enter the number and press "Call"):

*3001#12345#*

Your screen will change and show a lot of additional cell info.
"PDP Context Info" for example (under one of the numbers) shows your IPv4 IP address for the cellphone data network. Cool beans!

The usual bars (upper left corner) now show signal strength. If you ignore the minus: the lower the number, the better your reception. 

If you leave the "Field Test" application, you'll be seeing your regular bars again. 


ReplyQuote
 Hans
(@hans)
Noble Member Admin
Joined: 8 years ago
Posts: 2018
Topic starter  

p.s. you can make this (semi) permanent:

1) Go to the Field Test app as described above.
2) In the Field Test app, press the power button unti your iPhone asks if you'd like to power down - do not power down.
3) Press the "Home" button and keep it pressed until the Field Test app shows again.

You can undo this by going back into the Field Test app and simply exit the app again and your bars will be back.


ReplyQuote

Like what you see and you'd like to help out? 

The best way to help is of course by assisting others with their questions here in the forum, but you can also help us out in other ways:

- Do your shopping at Amazon, it will not cost you anything extra but may generate a small commission for us,
- send a cup of coffee through PayPal ($5, $10, $20, or custom amount),
- become a Patreon,
- donate BitCoin (BTC), or BitCoinCash (BCH).

Share: