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  • Signal: REAL Signal Strength, Cell Info & More


    One of the first things I installed after I jailbroke my iPhone 4 was @planetbeing's Signal app. It not only provides easy access to cell tower data and RF metrics that have been unavailable in iOS 4 due to the loss of FieldTest.app, but it gives you a way to say 'thank you' to a member of the Dev-Team. As @MuscleNerd tweeted when the app went live on Cydia, it's almost a community service to support @planetbeing in this way since "*everyone* benefits if he stays interested in baseband stuff." But it's not philanthropy to get this app, especially if you're interested in RF or if you have an unlocked iPhone and are trying to figure out which carrier gives you the best signal.

    Signal presents the location and receive signal strength from all nearby towers in a very intuitive Google Maps overlay. Your current 3G base station is shown as a red dot, with the actual real-time received signal strength shown in dBm inside the dot. Other UMTS/GSM cells are displayed as blue dots. Adjacent cells offering only EDGE service are shown in gray. If the app can't determine the signal strength, it will just show the letter E inside those dots. You may just see your primary cell when you first launch the app, but @planetbeing says to let it run for a few hours and it will cache the locations of all the bases it can find, which will display as yellow dots on your map.

    For true wireless geeks, there is an info page that shows details on all the cells that the app has been able to identify. The info page shows not only raw signal strength, but also RSCP, which is the power level once the signal has been descrambled. There's a ton of other data, such as the uplink and downlink channels, scrambling code and Ec/N0 (energy per codeword over the noise floor, basically signal-to-noise ratio). And just for fun, there's also a little "Death Grip game" you can play to see if you can kill your signal by holding your phone the wrong way.

    Since they don't accept donations, spending $5 on this well-made app is a way of saying thanks to the Dev-Team and helping support one of the most talented iPhone hackers we've got.
    This article was originally published in forum thread: Signal: REAL Signal Strength, Cell Info & More started by Paul Daniel Ash View original post
    Comments 78 Comments
    1. MBCMDR's Avatar
      MBCMDR -
      Got my support bought App..

      MBCMDR
    1. game.over's Avatar
      game.over -
      THAT IS SO MEAN....Elpelle6 straight outta of the Dominican Republic (i saw that on his info from his Cydia Repo) has cracked Signal !!!! that is wrong...shouldent he wait a lil bit more so that Planetbeing can at least put a lil extra cash in his pockets? i mean come on guys the Kid deserves it i mean lets be real..thanks to him i dont have to be locked to ATT's ****** network ..and belive me it is one F*CKED UP NETWORK here in Puerto Rico....the only Carrier that dominates Puerto Rico its called CLAROpr. and they are using Verizon's Signal..because ClaroPR baught Verizon Wireless here in Puerto Rico a couple of years ago....so you know..thanks to Mr.Planet AKA (Dev Teams Chief and Commander) now i can use CLAROpr on my iPhone 3G[s]....
    1. Buckmaster's Avatar
      Buckmaster -
      just downloaded it, lol, I have my wilson antenna pointing the wrong way on top of my house.
    1. zozodouce's Avatar
      zozodouce -
      i got it too and happy to give back to these guys.
    1. tudtran's Avatar
      tudtran -
      Thanks planetbeing and the dev team for all the work you done for the iPhones
    1. rhekt's Avatar
      rhekt -
      Quote Originally Posted by Levirules View Post
      ......... is Signal anything more than a novelty? Is there actually a utility to it?
      other than the death grip "game" *rollsEyes* its merely a geek tech novelty. absolutely no utility unless your an unlocker. [the ability to see which cell service provides you the best coverage in your area]
    1. carolinamic's Avatar
      carolinamic -
      Grab this as soon as I saw musclenerds tweet. Cool app. Loving my iphone4
    1. eeej's Avatar
      eeej -
      A very cool app, however, it does appear to leach battery even when it's not being used.

      My phone goes into airplane mode fully charged at night and with signal installed it'll be at 86% by morning, compared to still 100% without
    1. jamriman's Avatar
      jamriman -
      Don't really need it but bought for donation.
    1. CaptainChaos's Avatar
      CaptainChaos -
      Quote Originally Posted by game.over View Post
      THAT IS SO MEAN....Elpelle6 straight outta of the Dominican Republic (i saw that on his info from his Cydia Repo) has cracked Signal !!!! that is wrong...shouldent he wait a lil bit more so that Planetbeing can at least put a lil extra cash in his pockets? i mean come on guys the Kid deserves it i mean lets be real..thanks to him i dont have to be locked to ATT's ****** network ..and belive me it is one F*CKED UP NETWORK here in Puerto Rico....the only Carrier that dominates Puerto Rico its called CLAROpr. and they are using Verizon's Signal..because ClaroPR baught Verizon Wireless here in Puerto Rico a couple of years ago....so you know..thanks to Mr.Planet AKA (Dev Teams Chief and Commander) now i can use CLAROpr on my iPhone 3G[s]....
      How are you using Verizon's signal on the iPhone? That is not possible.
    1. antsh85's Avatar
      antsh85 -
      I would say it is the best 3rd party app in my Iphone, really useful.
    1. mirogster's Avatar
      mirogster -
      Why not working on 3GS, what's wrong with them?
    1. confucious's Avatar
      confucious -
      It works on all phones with iOS4.x - nothing wrong with the 3GS
    1. antsh85's Avatar
      antsh85 -
      +1 works fine on 3GS @ 4.0.1
    1. CaptainChaos's Avatar
      CaptainChaos -
      Will this tell me the name of the provider I am connected to? Or does it just tell me a cell tower number?
    1. draver's Avatar
      draver -
      I bought this for it's functionality, and also to contribute to the jailbreak cause.

      Unfortunately, it does not work for me. I'm using a 32 Gb iPhone 4, on 4.0, jailbroken and unlocked with Ultrasn0w. I'm currently running SBSettings, SBSchedule, MyWi, etc. No cracked programs, no SSH mods, plenty of ram available, 14 Gb storage available. Essentially nothing unusual in my setup. I've deleted and reinstalled several times, but still it only shows my mapped location without any towers displayed.

      I have sent 2 or 3 emails to Planetbeing without a reply, and also posted on HowardForums along with another user that it does nothing. I'm hoping to see an update or patch to get this to work. If I try and run the "Deathgrip" game, it closes the program back to the springboard.

      Any ideas of possible conflicts, or suggestions would be appreciated.
    1. BustAGroove's Avatar
      BustAGroove -
      I've installed the apps. Thanks to the iPhoneDev Team's hard work & continuing efforts to unshackle our iPhones
    1. whereswaldo's Avatar
      whereswaldo -
      Quote Originally Posted by game.over View Post
      THAT IS SO MEAN....Elpelle6 straight outta of the Dominican Republic (i saw that on his info from his Cydia Repo) has cracked Signal !!!! that is wrong...shouldent he wait a lil bit more so that Planetbeing can at least put a lil extra cash in his pockets? i mean come on guys the Kid deserves it i mean lets be real..thanks to him i dont have to be locked to ATT's ****** network ..and belive me it is one F*CKED UP NETWORK here in Puerto Rico....the only Carrier that dominates Puerto Rico its called CLAROpr. and they are using Verizon's Signal..because ClaroPR baught Verizon Wireless here in Puerto Rico a couple of years ago....so you know..thanks to Mr.Planet AKA (Dev Teams Chief and Commander) now i can use CLAROpr on my iPhone 3G[s]....
      That's why no one likes a cracker, They steal from deserving people for their own personal advantage. Hence the ban against warez on MMi
    1. Nickaroni22's Avatar
      Nickaroni22 -
      Great App, very useful! Thanks Dev Team for all your work with the jailbreak and unlock. The iPhone would never be the same without you!
    1. krosis's Avatar
      krosis -
      Quote Originally Posted by rhekt View Post
      other than the death grip "game" *rollsEyes* its merely a geek tech novelty. absolutely no utility unless your an unlocker.
      I wouldn't agree with that. I don't unlock my phone, and I still think it's interesting to know where my local cell towers are located. If I'm in a building and getting poor service, knowing where my local tower is can help me reposition myself for a better signal.

      Quote Originally Posted by eeej View Post
      A very cool app, however, it does appear to leach battery even when it's not being used.

      My phone goes into airplane mode fully charged at night and with signal installed it'll be at 86% by morning, compared to still 100% without
      I'm experiencing this as well. I guess I'll leave it un-installed until I need it. Interestingly enough, most of the other people having batter issues it seems are also using ultrasn0w, which I understand is also by planetbeing. I wonder if there's something specific with the way he accesses the baseband that is producing this problem.