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★★★★ Field Tester is a simple application to quickly test the quality of your connection ★★★★

Field Tester can be used to quickly evaluate the strength of your phone signal, and the quality of your data/WiFi network.


• Measure phone signal strength (dBm and percentage)
• Latency test for your data or connected WiFi network
• Foreground and background execution of tests
• History of all tests, as well as relevant application state updates
• Optional location tracking to associate tests with their geolocation
• Settings screen to customise all desired test parameters
• Map view showing location and details for each test


Location and network data is retrieved but stored only on the phone. No private user data is ever collected.

★★ NOTES ★★

Continued use of GPS running in the background can dramatically decrease battery life.

What's New

Version 1.0.1

Bug fixes
Changed wording for settings screen

Ratings and Reviews

2.2 out of 5

37 Ratings

37 Ratings

Cell Signal always displays 0%


Unfortunately this app doesn't do the simple functions advertised as the phone signal always displays 0%. However the latency value is usually about 260 ms and does change, but I need the phone signal level.

I have an iPhone 6s Plus on the Verizon network and have tested at multiple locations with different signal strengths. Very disappointed...

Useless app. Has not updated in two years


I have been holding out for this app for awhile now hoping that they would update. We used to use it to check signal strength (cellular dBm readings) for quite awhile... They have not and probably will not update. Don't download.

Cell signal level is accurate


Verified using Apple field test app.


Staircase 3, Inc.
1.1 MB
Requires iOS 5.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Dutch, French, German, Italian, Japanese, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese
Age Rating
Rated 4+
© 2013 Staircase3, Inc


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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