[Q] Switching SIM cards - Desire HD Q&A, Help & Troubleshooting

Currently I'm on Virgin Mobile with my unlocked Desire HD, I'm hoping to get a 3 sim, but I'm not sure as to whether it will work, as I've heard that it may not work, will it?

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[bneed some help!!

Hey guys i was wondering if anyone knew how or if it was even possible to use my unlocked htc 8525 on sprint network (CDMA).
Nope, won't work. The 8525 is a gsm/wcdma phone. And I don't think that sprint uses sim cards.
http://forum.xda-developers.com/showthread.php?t=314769

Help HTC TP2 SPRINT VERSION

Hello! Im thinking about purchasing a HTC TP2 Sprint version - UNLOCKED. The only problem is I live in Romania, and my question is that if the phone is SPRINT version, but unlocked, will I still be able to use all the radio tehnologies on my local carriers.
For example : Will I still be able to use mobile internet over EDGE/3G/HDSPA ? or since the phone is Sprint, it will connect only to Sprint EDGE/3G/HDSPA ?
The only 'flaw' I've found so far in unlocked phones, is that they can't be used on the carrier they've been unlocked from.
I plan to use the PHONE with a SIM CARD, since it's unlocked. Will I be able to use the 3G tehnology ? for internet and other hi-tech stuff ?
Also, will the FM radio work ?
Thanks in advance!

Just got an HTC desire from Telus canada, not recognizing Sim card

Hey I just received my HTC desire from Canada. I am trying to get it to work with At&t and it was supposed to be the Telus A8182 version. Right now it is not recognizing my sim card even though the device is supposedly unlocked. Because of this I cant access the APN settings to get it to work on AT&T network. I have noticed on the about phone settings that it says A8181 but the seller has told me that this could be due to the rom for the froyo update. I am new to these boards and android phone so any help would be appreciated. Thank You!!
Same Problem
I just got the Telus Desire as well and have the exact same problem. Here is what I have done so far and what i posted on another forum:
I just got an HTC Desire that was locked to Telus (Canadian Carrier). I have read that numerous people are using it on Rogers network. From the day I got it when I put my rogers sim card in (the right way) it said "No SIM card in phone" so I could not enter an unlock code. Thinking the SIM was defective went to Telus and tried one of their sim cards and it worked fine, then I went to Rogers thinking it was a problematic card. We tried 4 cards and none of them worked. I then went to Bell (another canadian carrier) and tried their sim card. It worked as well but said that the phone was locked. I purchased an unlock code from the internet which worked. Now the Bell sim card works as well becuase the phone is unlocked. I put my Rogers SIM back into it and it still sais "No SIM card in phone". I also tried a SIM from a european company and it did not work as well. This HTC Desire works on the same 3G 850/1900 GSM that Rogers uses.
I got my Telus Desire from Best Buy within the first week of release and unlocked it, works fine with my Fido SIM. Before unlocking it it did say "Network Locked".
Edit: Just checked with a deactivated Rogers SIM. Worked fine, notification bar said:
(No service)
Rogers

[Q] Data on the DHD with Verizon in the US

Hello Everybody,
My brother lives in the US, I live in Holland, Europe. As he was visiting me, he fell in love with the DHD.
The big question now is, can he use the phone normally in the States. I know the phone is quadband, so calling and texting should be fine. But I'm not really aware of which techniques/frequencies Verizon uses for data/3G. Can he use this phone there?
At the moment he has a blackberry with a simcard, so he can just put that one in the DHD I reckon?
He will be able to use the phone on GSM networks only, and won't receive any 3G. 2G / EDGE will work fine however.
He could also try to get an Inspire which is basically the American GSM Desire HD which should support 3G and even 4G if he's on AT&T.
Thanks for the info.
Also I see that the Thunderbolt is coming soon. Isn't that like the DHD from Verizon. (he's on Verizon at the moment, and I'm not sure if he's willing to switch)
Indeed, the Thunderbolt is the Verizon Desire HD equivalent. You got me confused because Verizon don't use SIM cards and the DHD definitely won't work on Verizon.
Well, he has a blackberry with a SIM card at the moment. As I understand though, the blackberry is a hybrid phone which uses GSM(sim card) and CDMA.
Still think it's weird he currently owns a Verizon phone with a SIM card though.

[Q] Will a HTC Wildfire S a510e work in Canada?

I usually come this site for all my questions to be answered when it comes to android phones. This is my first post.
I bought a HTC Wildfire S a510e from eBay this week. It is unlocked for use on any GSM network. I realise this is the european model but I figured it would work accross the pond since it is unlocked.
When I put my SIM in the phone and proceeded to register on the VIRGIN(Canada) network i was prompted by a message saying that my SIM card would not allow me to connect to the VIRGIN network. I find this strange because obviously if I'm with Virgin Mobile I'm using a Virgin Mobile SIM card. Is this model not suppose to work with the VIRGIN Canada network? Is there a way I can modify the Radio Firmware so that it will work here?
bob.dole said:
I usually come this site for all my questions to be answered when it comes to android phones. This is my first post.
I bought a HTC Wildfire S a510e from eBay this week. It is unlocked for use on any GSM network. I realise this is the european model but I figured it would work accross the pond since it is unlocked.
When I put my SIM in the phone and proceeded to register on the VIRGIN(Canada) network i was prompted by a message saying that my SIM card would not allow me to connect to the VIRGIN network. I find this strange because obviously if I'm with Virgin Mobile I'm using a Virgin Mobile SIM card. Is this model not suppose to work with the VIRGIN Canada network? Is there a way I can modify the Radio Firmware so that it will work here?
Click to expand...
Click to collapse
It's actually a hardware thing....your carrier's operating frequency might be incompatible with the ones in the European version.....you can't make it work by changing the radio firmware.....it might just brick your phone

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