Xperia X1i vs X1a

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After researching for weeks and weeks i recently found that there will be 2 different versions of the phone. one for north america.. the other for the rest of the world... something regarding patents of broadcomm or something... but looks like the USA version will not have VGA video capabilities with 30fps... it will be less at 24fps.
another difference is the network.. 850Mhz vs 900mhz GSM?

anyways....

i am wondering... it will probably be possible once both phones are launched... to buy the USA version... and flash it to the NON usa version's ROM??? and is that advisable.

also how much with 2yr contract you guys thinking it will cost??? im guessing 499-599 for the first couple weeks.

also... are the frequencies :850/1900/2100 MHz: related to HARDWARE of device and independent of ROM? say i flash rom to the europe version... will i still have UTMS 850/1900/2100 MHz or will it be 900/1900/2100 MHz... and im guessing the 900 wont be utilized since ATT doesnt use it.

and if i lose the 850mhz range... for utms by flashing .. if so.. will i really experience signal quality drop?

sry for all the questions.. im not very familiar with these stuff.

ps: but i heard it will be a hardware limitation so even by flashing rom... USA version will not be able to decode h.264 video am I right?

SonyEricsson Website Has 5 Bands

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Originally Posted by fiapop

also... are the frequencies :850/1900/2100 MHz: related to HARDWARE of device and independent of ROM? say i flash rom to the europe version... will i still have UTMS 850/1900/2100 MHz or will it be 900/1900/2100 MHz... and im guessing the 900 wont be utilized since ATT doesnt use it.

and if i lose the 850mhz range... for utms by flashing .. if so.. will i really experience signal quality drop?

sry for all the questions.. im not very familiar with these stuff.

ps: but i heard it will be a hardware limitation so even by flashing rom... USA version will not be able to decode h.264 video am I right?

http://sonyericsson.com/cws/products...x1?cc=us&lc=en ............!850/900/1700/1900/2100 MHz bands ............!

Originally Posted by Technology

http://sonyericsson.com/cws/products...x1?cc=us&lc=en ............!850/900/1700/1900/2100 MHz bands ............!

Yes that's very doubtfully in the same version, that's what he's saying. 2 different versions, likely 850/900/1900/mhz UMTS on one, and 900/1700/2100mhz UMTS on the other. As for hardware limitations, almost definitely. I can't imagine having 5 bands of UMTS available in 1 phone, I think it'd have to be bigger. You could flash a new ROM independent of radio, and not mess up the coverage, sure.

As for your questions about 850mhz, here's how it goes.

AT&T, in the US: 850/1900MHZ UMTS, depending on the area it will be 1 or the other.
T-Mo, in the US: 1700/2100MHZ UMTS, both active at the same time, one for upload the other for download.
Europe: 900MHZ (I believe) UMTS
Asia: 2100MHZ (I believe) UMTS

So with AT&T, losing functionality of 1 band will limit your reception in certain parts of the country... But don't flash a new radio and it should be fine.

As for carrier, I don't know if any in the US is going to pick this up and sell it subsidized. If not, you're shelling out all $900+ for this baby with no contract.

Originally Posted by Black93300ZX

Yes that's very doubtfully in the same version, that's what he's saying. 2 different versions, likely 850/900/1900/mhz UMTS on one, and 900/1700/2100mhz UMTS on the other. As for hardware limitations, almost definitely. I can't imagine having 5 bands of UMTS available in 1 phone, I think it'd have to be bigger. You could flash a new ROM independent of radio, and not mess up the coverage, sure.

As for your questions about 850mhz, here's how it goes.

AT&T, in the US: 850/1900MHZ UMTS, depending on the area it will be 1 or the other.
T-Mo, in the US: 1700/2100MHZ UMTS, both active at the same time, one for upload the other for download.
Europe: 900MHZ (I believe) UMTS
Asia: 2100MHZ (I believe) UMTS

So with AT&T, losing functionality of 1 band will limit your reception in certain parts of the country... But don't flash a new radio and it should be fine.

As for carrier, I don't know if any in the US is going to pick this up and sell it subsidized. If not, you're shelling out all $900+ for this baby with no contract.

I have confirmed the 5 bands already.....

Originally Posted by Technology

I have confirmed the 5 bands already.....

:eek:
Confirmed like, you own one and have used it in different markets on 3G?
Then what 2 versions is he talking about?

Confirmed with SonyEricsson

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Originally Posted by Black93300ZX

:eek:
Confirmed like, you own one and have used it in different markets on 3G?
Then what 2 versions is he talking about?

I have confirmed the compatiable in the USA with T-Mobile's USA 3g and AT&T's 3g, I have confirmed this with SonyEricsson. The 2 versions are "a" and "i", this may have been the intentions of SonyEricsson in the beginning, but may have change to one worldwide 5 band Xperia X1, this part has not been confirmed. Here is a website that tells you what carriers in the USA the Xperia X1 will not be compatible with at all. http://www.smart-mobile-gadgets.com/...roduct_id=1236 Also it will tell you all bands and carriers the Xperia X1 will be compatible with in the USA........!

interesting. well i sure hope ATT picks it up so i can do it with a contract and save some cash on the spot

so has it been released officially and confirmed in germany.. and those other countries?

also... with the "usa" version that doesnt do 30fps...
will it play pretty smooth any videos that i put on it? like movies .mp4?

It's supposed to be able to play 720x480 (DVD Quality) movies smoothly so I don't see why it shouldn't.