MelonSplitter Posted April 21, 2013 Share Posted April 21, 2013 Is there a way to tell if a tower goes live with LTE other than having to rely on Sensorly or by just happening to look at your phone and being pleasantly surprised. Quote Link to comment Share on other sites More sharing options...
MrZorbatron Posted April 21, 2013 Share Posted April 21, 2013 Yes. You look for the big neon sign that says "LTE is here!" More seriously, you could manually reset the radio on your phone while near the tower and then check signal level using LTE RF engineering screen or the status screen on your phone (if it shows LTE signal level there, not all do) while under or very close to the tower in question. Resetting the phone is done by cycling it on and off of Airplane mode, or on some models, turning cellular data on and off is sufficient to trigger a re-scan. Be sure you leave it in airplane mode for at least 10 seconds or so and see the signal bars and data indicator disappear before you turn airplane mode back off. The phone only checks for LTE signal otherwise every 10 to 30 minutes, depending on the model. The more recently it detected LTE signal, the more often it will scan for it. For example, my GS3 I have observed to go on and off of LTE a number of times in only about 10 minutes when I am in an area with a lot of buildings and hills that might block signal. On the other hand, if I have been away from LTE for a substantial amount of time few hours), it might be 10 or 15 minutes after I am back in the area before it looks for and connects to it. 1 Quote Link to comment Share on other sites More sharing options...
Rukin1 Posted April 22, 2013 Share Posted April 22, 2013 If you can drive by it and you get 4g Quote Link to comment Share on other sites More sharing options...
bucdenny Posted April 22, 2013 Share Posted April 22, 2013 If you can drive by it and you get 4g not always the case. in san diego many sites are within 1 mile apart and you can be getting LTE signal from a farther tower. Quote Link to comment Share on other sites More sharing options...
MrZorbatron Posted April 22, 2013 Share Posted April 22, 2013 not always the case. in san diego many sites are within 1 mile apart and you can be getting LTE signal from a farther tower. You can tell approximately by signal strength though. If you're at -66dBm or so, generally you are within 500' of the tower. Also, in cases like San Diego, antennas tend to have more down-angle to deliberately limit range, thus decreasing interference resulting from overlap with neighboring cells (which could reduce capacity if not mitigated). This additional downward focus also serves to increase signal strength within the area served by the tower, improving in-building performance. Quote Link to comment Share on other sites More sharing options...
Rukin1 Posted April 22, 2013 Share Posted April 22, 2013 You can tell approximately by signal strength though. If you're at -66dBm or so, generally you are within 500' of the tower. Also, in cases like San Diego, antennas tend to have more down-angle to deliberately limit range, thus decreasing interference resulting from overlap with neighboring cells (which could reduce capacity if not mitigated). This additional downward focus also serves to increase signal strength within the area served by the tower, improving in-building performance. That to, I have the GS3 and I have checked the debug screen, I found a tower that wasn't on the map and they turned on 4G and Robert didn't know . Thanks to the debug screen Quote Link to comment Share on other sites More sharing options...
z250kid Posted April 22, 2013 Share Posted April 22, 2013 what does it mean when they turn the tower on and off go from full serive to roaming! Quote Link to comment Share on other sites More sharing options...
Deval Posted April 22, 2013 Share Posted April 22, 2013 what does it mean when they turn the tower on and off go from full serive to roaming! Yes, if they turn the tower off, and there is no other tower in close proximity, you will go into roaming. Quote Link to comment Share on other sites More sharing options...
MrZorbatron Posted April 22, 2013 Share Posted April 22, 2013 I haven't observed the numbers on the debug screen to correlate with the tower numbers on the map myself. Quote Link to comment Share on other sites More sharing options...
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