Opening the iTunes Store.If iTunes doesn't open, click the iTunes application icon in your Dock or on your Windows desktop.Progress Indicator
Opening the iBooks Store.If iBooks doesn't open, click the iBooks app in your Dock.Progress Indicator

iTunes is the world's easiest way to organize and add to your digital media collection.

We are unable to find iTunes on your computer. To buy and download Signal Alert by Leland Roys, get iTunes now.

Already have iTunes? Click I Have iTunes to open it now.

I Have iTunes Free Download
iTunes for Mac + PC

Signal Alert

By Leland Roys

Open iTunes to buy and download apps.


A background running, multitasking enabled app that alerts you to loss of cell / wifi service!

New! Now supports EMAIL of the full data logging of loss of cell service. A full color map showing pins where each location of no cell service occurred. You can now email yourself (or anyone) a complete log sorted by date (with Carrier name) of the long/lat data and time of cell service lost.

Need to know when you lose cell phone reception? Even if your phone is in your pocket or briefcase? This is the app!

Worried about the reception issues you have read about? This app is always watching for loss of reception, even when you are not looking, and will alert you if it happens. A must for people who cannot afford to miss calls! Nurses, Doctors, Police, Firefighters, Moms and Dads: Never miss that important call again because you are in a dead spot with no cell service.

Note: Known limitation: If you are connected to a known WiFi network, this app cannot detect the loss of 3G/Edge while connected to WiFi, I am actively working on a solution to this. For a workaround, turn off WiFi if you absolutely need to know when 3G/Edge drops out at all times.

Don't ever miss an important call or SMS text message again, unaware that you have no cell service. Have Cell Guardian monitor for you - from the background!

** New! Mute toggle for Wifi alerts and Battery Alerts per your feedback! thank you!

** New! Now with AUDIBLE Low Battery Alerts. Warns you from the background with a pop up alert, plus sound, that your battery is below 50% and then below 30% and down to 5%: This is something the iPhone does not have built in, remember the older phones that would beep to warn you of low battery? now you can have that great feature back!**

**No surprise bills in the mail!**

Lots of download apps for music and video can seamlessly go from your home Wi-Fi to a 3G network without a hiccup, thats great, but not so great if you have a capped data plan and have to pay for that 3G time! Let this app warn you when you leave Wi-Fi for 3G every-time.

You can easily test this app by turning Airplane mode on and off while the app is running, or by turning Wi-Fi on and off. You will see the pop up alerts.

Another fun way to test this: If you use Wi-Fi at home, walk around your block and see how far you can get before the app beeps to tell you you lost your Wi-Fi connection.

If you are not on iOS 4 yet you can still use our "No Signal" app which runs on all versions of the OS (but does not run in background mode).

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

What's New in Version 4.6

Bug fix: After iOS 8 + Not registering lost cell signal with no service indication - fixed.

iPhone Screenshot

iPhone Screenshot 1

Customer Reviews

Nice app!!

Can't find a way to get support!! App goes to homepage of author, but only info on apps, can't contact author. Also, should be an option for more sounds and running in the background using GPS, may use data, which is counterintuitive. I have unlimited, so to me it's not an option.... It does work as stated.

can't customize battery alert

I bought this app solely for the low-battery alert, and was disappointed that I could not configure the battery levels that trigger alerts. All I want is a 5 or 10 percent alert, not the 30 or 50 percent.

Reports WiFi SIGNAL loss NOT loss of connection to internet

I wanted an app that told me when I lost connection to Internet over WiFi, like when you have to re-login at a hotel or airport. This apt reports WiFi signal loss, not connectivity loss.

Signal Alert
View In iTunes
  • $0.99
  • Category: Utilities
  • Updated:
  • Version: 4.6
  • Size: 2.1 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 7.1 or later. Compatible with iPhone, iPad, and iPod touch. This app is optimized for iPhone 5, iPhone 6, and iPhone 6 Plus.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
All Versions: