JackisBack Posted April 19, 2014 Share Posted April 19, 2014 Currently I use a non Android mobile phone with a TrueMove-H SIM ( Comfortable SIM ) the phone has the following radio frequencies , GSM 900/1800 MHz WCDMA 850/900/2100 MHz where I live I have a good signal strength for TrueMove-H , but very poor signal strength for Dtac / AIS / TOT , so I am really only able to use TrueMove-H / 3 G . I am looking at buying a new Android mobile phone The two new Android mobile phones I'm really interested in have the following frequencies GSM 850/900/1800/1900 MHz UMTS 900/2100 MHz GSM 850/900/1800/1900 MHz UMTS 900/1900/2100 MHz Both the above new mobile phone 's frequencies do not show the 3G 850Mhz band that my current mobile phone has so a few questions 1. if my current non Android mobile phone is using TrueMove-H , could it be only using the 3G 850Mhz band 2. if I purchased any of the two new Android phones shown above , how sure can I be that because the 3G 850MHz frequency is missing , it would work with my current TrueMove-H SIM When I look at the TrueMove-H information on my current non Android mobile phone it shows this - [ Operator ] TRUE-H [MCC/MNC] 52000 [sERVICE] WCDMA [sTATUS ] FULL SERVICE I do not want to buy a new Android mobile phone and find out that there's a problem using it with my current TrueMove-H SIM , because there's a difference between the frequencies on my current mobile phone and the frequencies on the new mobile phone . any help appreciated Link to comment Share on other sites More sharing options...
build6 Posted April 19, 2014 Share Posted April 19, 2014 What exactly is your current non-android phone? (Is it not a smartphone?) Naming your intended new phone possibilities might be useful too. Your shortlisted phones don't look right for True. Yes you could be only using 850, and 850 continues to be important notwithstanding the promotion of 2100. Things are pretty complicated but the shorthand i rely on is this: The "GSM" frequencies listed are relevant for voice calls. The "UMTS" frequencies listed are important for 3G data internet access. Because modern phones have so many GSM bands by default they basically work everywhere for *voice* calls, and don't usually need to be considered. The issue is always 3G data - and your new buys don't have 850 UMTS. And why buy an Android smartphone if you're not gonna use the internet? Link to comment Share on other sites More sharing options...
lomatopo Posted April 19, 2014 Share Posted April 19, 2014 you should buy a new Android phone which supports 850 megahertz 3G. Link to comment Share on other sites More sharing options...
JackisBack Posted April 20, 2014 Author Share Posted April 20, 2014 To play safe ive decided to buy a new Android mobile phone that has the 850Mhz 3G band This one - Sony Xperia M2 dual http://developer.sonymobile.com/2014/02/24/introducing-xperia-m2-a-4g-quad-core-smartphone-with-4-6-qhd-display-8mp-camera-dual-sim-version/ Thanks every one Link to comment Share on other sites More sharing options...
build6 Posted April 20, 2014 Share Posted April 20, 2014 To play safe ive decided to buy a new Android mobile phone that has the 850Mhz 3G band This one - Sony Xperia M2 dual http://developer.sonymobile.com/2014/02/24/introducing-xperia-m2-a-4g-quad-core-smartphone-with-4-6-qhd-display-8mp-camera-dual-sim-version/ Thanks every one ah! a fellow Sony user I do wish Sony would release a waterproof dual-SIM phone though Link to comment Share on other sites More sharing options...
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