I apologize for being absent for the last few days. I am in Houston where Hurricane Ike hit and we have been without power or cell service. On a good note, I have been using Universal Sim V 5.50 for a week and I have had full services (when in service areas). I am actually surprised at the way this sim comes OUT of a no service state. I had No Service for 24 hours (due to the storm) and as soon as I went into an area with service, it came right back on. This is very impressive. I will test further, but I have to go closer to the city due to the downed cell towers. SO FAR SO GOOD with Universal Sim!

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I am not fond of using signatures...

its working with the new 3g ver 2.1. check your pm for more info

ranova, here the response to your questions:

If I loose signal in the basement it comes back up once I go upstairs within less than 2 minutes.

I have used the universial sim now for about a week and it works ok. Not perfect since I had two occurances where I had no signal. I rebooted the phone and it got back up running. Typically it works fine in the MSP area driving about 40 miles arround every day.

The GPS works great at all times. You can see the small dot move arround on the screen while you are driving with or without background maps, even without data, or wifi. I have loaded a few maps of my surrounding when I am at home with wifi. The data remains in the memory and when you drive in areas without data you can still see the map that you loaded. I wish I had a bigger area in the memory... Not sure if there are limits to this... but it works.


X-Sim and T-mobile USA

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Testing Results: Universal Sim v540, T-Mobile pay as you go, USA in Minnesota.
Just got the sim: Working out of the Box.
Incomming Voice: OK
Outgoing Voice: OK
EDGE: NA I do not have a data plan
3G: NA, I do not have a data plan
WiFi: OK
GPS: Ok, but requires data or Wifi to load maps

Ranova,

Very nice work, as last someone has provided us a easy to read & understand & systematic test results.

I personally opion is if we can also put down wether we are using the T-Mobile 3G or 2G network as well, I tried some *sim, they do not support 3G at all. Also, it will be good if we acn put down what symbol is on the iPhone when using data, is it blue "3G" icon (which mean surfing at 3G fast speed) or 2G blue "E " icon(which mean surfing at 2G slow speed). Some *sim does not support 3G fast speed surfing.

Sorry, I left that one out... Yes, I am on 2.1 but still have the 01.45.00 baseband.

Ok so this is probably a silly question. I read the first couple of pages of this topic, where it says to stay away from SIM unlocks, then I read the last couple where people are reporting which SIM unlocks they are using and the results.

So is it okay to use the SIM unlocks now?

I am in the UK, is there a SIM unlock solution that is recommended over others?

Also quite worried about getting the card out without any issues, the reason I want to do this is so I can keep my warranty fully intact.

PS - I would read the whole topic but 48 pages is just a bit too much

@Spec09

I remember you have problem with your GPS for awhile.

Try to drive in local to pick the satellite signal.
Make sure you hit locate me.
Turn off the map, turn on again, off and on locate me. Keep doing that whenever you are on the road.

It took me 20 mins last time after I updated to v550 on universal sim, and half an hour after upgrade to firmware 2.1. This is for the first time only. Afterward, it's almost instantly.

Not sure why. I think with t-mobile sim, it has a hard time trying to activate the GPS chip.

Here is some updates for U.S. T-mobile:

Tornado sim: everything works well on 2.0 firmware without losing signal for 3 days. I stopped using it because my sim tray kept getting stuck. I am waiting for new model.

Universim (v540: used for almost 2 weeks on 2.0 firmware; v550 on 2.0 for couple days and 2.1 firmware for 4 days)
Everything works well! Of course no 3G for t-mobile.

On v550, it can regain signal after losing signal for 5 mins because was in no coverage area. However, edge icon will be lost. Need to reboot the phone to get EDGE back.

So universal sim works great for more than two weeks now.

Do you mean you let it run for 20 mins or you repeated turning maps on and off and "locate me" for 20 mins?
I'm using universal sim v550 too but it stops searching after 30 secs or so and displays "Your location could not be determined".

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Hello, I'm a Mac...

I turned on the map for 20 mins, and did the locate me many times to activate A-GPS. As my understanding, your location could not be determined meant that you were using Cellular tower, not satellites signal.
Satellites detect where your phone is on the earth. It doesn't care if you have a map or not on your phone. It just locate the location of your phone. The map is for showing you the roads.
Even you have no internet, or in other words you have no map on your phone, if it is activated and can detect the satellite signals, the blue dot still shows up.

If your GPS is not working, it could be that it's not activated yet.

I hope someone can write an app that showing the satellite signal on the iPhone. That way we know that the GPS is working or not.

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Would all testers be so kindly and read THIS topic?
Thanks!





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