Sometime it shows no signal, and read "no service". Not the problem of the network coz my friend use the same mobile service at the same location.
1244412
Oh, for me I had t-mobile. Uh? Service was ok. Really I think it was the device. It would cut off and on. The interface was laggy. Phone calls for me were clear. I had no issue with service other than not being able to receive sms messages
1244413
That could be the network michochip i suggest you to ask for a new one or to replace it meanwhile you can turn off the phone, take it out and reinsert it in it's orifice. I hope that's the cause of your problem like it happened to me because if it isn't that should be the phone modem
1718506
Sounds like a defect. Get a replacement. I have had two for a long time and absolutely no problems. Be sure there is no dust covering it that may block signal and tell it that someone is near.
1515290
mine has great connectivity. i have no problems with my wifi connection. signal strength although sometimes are not good but this is due to the signal strength of the provider i connect to.
501384
I haven't had problems with wifi. You may want to see if you have the latest software for it.
1129037
You need to make sure your phone has the proper bandwidth for your region/country, and that it's unlocked. Check with your provider for bandwidth information.
719169
Well it won't load if you do not have any signal or if it is not in your contract. I don't have the phone now because it was not good for me to use. Contact your service provider if this doesn't help. Not the best phone. Never go knockoff.
1842993
I would think you have a defective model. Mine never loses signal once synced up.
1793082
****Update 3/18/2011*****Changed the settings as Tony suggested, and everything seems to be working fine now. Have not had to reset, and signal strength has improved. Will update again in the next few days. Thanks Tony!!******************************************************************************************************Nope, it's not just you. I have the same problems, and I'm going to try tony's config fixes to see if I can get mine to work any better.
494773
I'm not sure but it sounds like it's a problem with the phone and not the sim card...just guessing though.
2144530
I have never had a problem with this or any other case, maybe it is the area you are receiving the signal from.
1570489
I haven't experienced that specific issue myself. My area is much smaller so most of the time if I start getting slower signal I have to manually switch to the stronger network.
1448219
Dan, Did you get it to work. I'm having the same problem with the same modem. I have 2 of the broadcasters. I have the Verizon 4g (which works just fine) and the AT&T; Sierra Beam Momentum with the same message you are getting
1213598
The frequency it runs off of isn't the same as some phone companies, so it doesn't work. You can check what the company runs off of for 3G online.
2251612
My cell is not working. I tried three cell phone carriers and it did not work. The reading is "No Sim Card" but the sim card is there. The phone is unlock but still does not work. Guess I was not lucky. To late to return it. Just hope others having the same phone works. Samsung phone are the best in clarity. Good Luck.
320889
It could be a problem with the network carrier. Signal quality varies from one network to another and depends on the location as well. Sometimes calls can drop when signal is weak, but not all the time. Personally, I don't think it's the phone at fault unless it is that particular one that somehow has issues. I would try a SIM card from another carrier to compare call and signal quality. If all is good that way, it will definitely prove it's the network. Good luck!
1403676
I just activated my cell about 2 weeks ago. I've had sometimes the message with authentication problems when it logs on, but I don't know if it's my router or what. Till now so far so good.!
1087572
I don't have that problem. If you have a problem verizon can fix most problems over the phone. It might be the signals that you have