3G icon I suppose.

Actually the firmwares are the same when it comes to operation and functionality of the phone. All the fixes being introduced are the same too. Sony Ericsson probably have to cater their phones for different regions, different locality with different language groups, different network operators and their operating conditions and telco contract.

So the hardware platform which is the phone we're talking here and the core firmware is the same. Its just the locality and region that'll decide on different content to be put on the phone, like languages, writing languages, etc. SE probably divides the world market into different regions like APAC, SMEA, etc so they name their firmwares differently to denote the region the phone is supposed to be in. The CDA is the region code assigned for the phone and everytime SEUS detects the phone, it'll look for the CDA to find its region. Then it'll look through a database of firmwares available for the particular region. (If I'm not mistaken).

That'll explain why some of you having Chinese writing capability but when you run SEUS, that capability is lost when you upgraded the firmware. The more permanent fix to this is to change the CDA entirely which only 3rd party flash utility and service like Wotanserver.

I've done it before. Its actually quite safe if you know what you're doing. So I suggest doing some reading and familiarized yourself with the procedures so you would know what to expect. Wotanserver's website do have a well thought of manual of how to go about this. Thank you!

KTCY,
I doubt so, because before I changed to 3G simcard, that doesnt appear

davidmak,
thanks for the explanation for the firmware update

Is this the icon you saw ?

If this is the one, then it is 3G icon.

You actually already answer your question. Before you change to 3G sim card, for sure can't use 3G . Now you change it for sure it can detect the 3G network and the icon appear.

ya
because I do not know its the 3G icon ma thanks alot

my friend got that icon but mine is a phone icon with a number1

Using Digi ?

ermmm.. a normal simcard can use the 3g already (maxis leh, celcom i dunno) mine`s the normal 64k simcard already can use 3g

Mine also. But just now he said before he change the sim card nothing so I assume is because he change to 3G sim card then the icon appear as normal sim card need activation for 3G.

t
then again i never use 3g on the k810.. yet

occasionally use 3g for video calls.

I just tried once last night
but the sound is a little terrible, I mean the loud speaker, its noisy + not clear lo
hmmm, it should use with earphone?

yup.
should use wif earphones.

quality is still ok if u hold still ur fon.
back camera quality is a bit better...

Back camera quality for sure better. It's 3.2MP lens/

back camera during video call?
the video will smoother?

Smoother or not is depends on the network.
Clarity is depends on the phone lens as well as network speed.

will be clearer...but still depends on da signal strength...

using back camera is it still call video call? the other side can c u....but u cant c other side...unless....use mirror refletion

The SIM and USIM card are meant to be backward and forward compatible. As long as the telco side has activated your account to use 3G services, any SIM card will work.

The only difference with the USIM card is UMTS authentication and encryption.

I agree that the frame rate of the video call (hence, how smooth is the video) is dependent on the network strength. At higher network strength, the effective data rate will be higher as well. Clarity however also depends on the network because your image have to be transported to the other side of the call, going through the network. A higher effective data rate will of course guarantee the minimal loss in data.

Assuming that we have the full theoretical data rate, of course phone lens (though I think its minimal) will at some point improve images. The secondary camera at the front of the phone is the usual 330K (up to 640x480) CMOS sensor running at maybe 15fps or lower depending on signal quality. Meaning at each second, the sensor will feed 15x (or lower) 330K images to the phone's transceiver.

On the other hand, the primary camera at the backside of the phone is a Cybershot compliant 3.2MP camera. Thats a 2048x1536 resolution thats maybe 200-300kB of data per frame. At 15fps it'll be enormous. So I doubt thats the case. If the 3.2MP camera is usable for 3G Video Call (I haven't tried this before), its actually sampling images at a smaller resolution, near 330K. There's no special lens here in the K800/810, but I doubt Carl Zeiss lens would do any difference on a phone. One point to note although at IMAGING MODE the K800/810 is able to take pictures at 3.2MP, in VIDEO MODE going through the same lens and same sensor its only outputting video at 320x240@15fps which is way smaller than 3.2MP.

So my point is, do not expect 3.2MP performance and hence a better video call from the backside camera.