i got a new unlocked phone month or so back. the Blu Studio 5.3 S. a really nice phone, for a no-name brand. from a company out of Florida, so you’re doing your patriotic duty.
but originally, i could get my AT&T sim card to work only in the second sim slot (this phone has a dual-sim). and not only that, but it would often lose contact and i would have to power down the phone and power it back up to get it to connect to AT&T. the phone calls were choppy and garbled. and i was seriously considering a return to Verizon. (even though the specs on most of their phones don’t rival the ones for the Blu).
in the end, if you’re a techie, that’s what you look at–the specs. strangely enough, Blu Studio 5.3s sports a quad-core snapdragon CPU. that ain’t chump change. the number on it just one below the quality that goes into a Galaxy Note II/III. to the effect that the general user is not going to see any difference.
and the “cheaper” phone has a removable battery (have not seen an android system yet that doesn’t need a cold-cock now and then). has the slot for SD micro chip …. so you can just pop your files from the old phone into the new phone.
that said, i had this problem with the sim only working in the number 2 sim slot. and the most frustrating thing was that it would only run the Edge 2G internet — no matter what APN settings i used. finally thought maybe the problem was AT&T, and spent a good part of the afternoon going over things with one of their representatives. still no dice and only the 2G.
SO — i took the SIM out and put it in my old AT&T phone. just to see if it got the 3G there. it did. so i went into the settings on the old phone and noted the APN list:
Name: ATT WAP
Username: (left blank)
Password: (left blank)
Server: (left blank)
MMS proxy: wireless.cingular.com
MMS port: 80
IP version: IPv4
APN type: default, mms, supl
after noting the APN settings, i put the Sim card back into the BLU — but put it in the number one slot. i also used a slip of paper, doubled, to hold it in place a little better …. as suggested by one user in a forum.
wasn’t reading the sim at all. but i was done messing around, and did a factory reset on the phone, with the sim in on the number one slot.
amazing thing happened, when it came back online, the card was at an H (highspeed) on the notification bar. that means it’s doing 4G. and no more lag on recognizing the SIM. if is on wifi only it shows the 3G symbol. that’s the first time I’d even seen it, up until then it was showing only G or E.
so that first slot is the one that has the 4G capability (shows H on notifications), i guess the 1900/2100 MHz or something to that tune. but for some reason it wasn’t working before the reset. AND i had reset the phone twice before, after installing aps that seemed to slow it down.
(for those that don’t know, to reset the phone to factory settings you go into System Settings>>>>Backup & reset>>>>>Factory data reset)
so I’m not sure what or how ………….. might have to do with putting the SIM for awhile into the old phone, changed a setting on the SIM so it could run the 3G/4G. might be that having the SIM in during the reset process kicked something into gear for the Blu phone.
i don’t know. it wasn’t just the APN settings, because i tried that before resetting the phone and they made no difference. and when i tried the SIM in the number one slot before, i had to change the default settings to GMS only for it to read at all.
so what am saying is that if you are using AT&T and getting only the Edge signal on your Blu phone, don’t give up. wish i had more definitive reasons on how it finally got working with the 4G — but main thing is you have to have the SIM card in the number one SIM slot. and don’t be afraid to talk to AT&T, let them know what make and model of phone you are using with your gophone account.
finally, for those who don’t know how to set up the APN — go into System Settings >>>>> Wireless & networks/More >>>>Mobile networks >>>> Network settings (make sure “data” is enabled) >>>>> CARD 1 >>>>Access Point Names. then to add the new APN settings, tap the menu key (bottom left next to the home key), and select “new APN”
after entering the APN settings, don’t forget to save them, by tapping the menu key again and selecting “save”