Currently Being ModeratedApr 10, 2012 2:30 PM (in response to davgonma)
Same problem here with 3g ipad 2 works but ipad3 edge only. My carrier is on 850mhz but att sim roamds on the same carrier on 3g
Currently Being ModeratedApr 10, 2012 2:43 PM (in response to davgonma)
3G requires two frequencies, one for upload and the other for download. If the situation in Costa Rica is the same as T-Mobile in the USA, then one of the required frenquencies used by the local telecom for 3G is not supported by your iPad to receive 3G and the device drops to 2G.'09 Mac mini, iPad 2, iPhone 4S, Mac OS X (10.7.3), iOS (5.0.1) Mac fanboi since 1984!
Currently Being ModeratedApr 10, 2012 7:12 PM (in response to Dah•veed)
Here by me the freq are not like t-mob because ipad2 does work without problems.
Currently Being ModeratedApr 10, 2012 7:33 PM (in response to CalvinBaank)
The new iPad and the iPad 2 do not have the same radio capabilities, so perhaps if you searched on the internet for the difference in their communications abilities you would see that it is likely that my answer to the OP is also your answer.
You are highjacking someone else's topic as if it is your own.'09 Mac mini, iPad 2, iPhone 4S, Mac OS X (10.7.3), iOS (5.0.1) Mac fanboi since 1984!
Currently Being ModeratedApr 10, 2012 8:05 PM (in response to Dah•veed)
I'm not highjacking the thread.
I made my own thread and ton of test. That can help us debug the problem see threads below.
Both ipads have identical umts/hspa/hspa+ and gsm/edge frequencies. Ipad3 just has lte additionally.
See testing i did.
1)How can local sim not work on ipad3 but on ipad2 it works 3g
2)how can att with romaing work on same 3g network where local sim of that network doesnt work
3)how can the a different local provider work on ipad2 but gives no service on ipad3.
I'm even working in telco we install the 3g network here for 1 provider.
Let me post the freq where i get no service with 1 provider.
Telesur 900mhz ul 890.20-902.40 dl 935.20 - 947.40 gsm
1800mhz ul 1710.20 - 1747.40 dl 1842.40 gsm
2100mhz ul 1960-1980 dl 2150-2170 umts
Umts band 850mhz
My problem why does certain things work with ipad2. Even att roaming on ipad 2 has 3g network coverage within 10sec and with ipad3 it takes a minute to get coverage?
Currently Being ModeratedMay 8, 2012 1:09 PM (in response to CalvinBaank)
I also tried with 5.1.1 and didnt work