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  1.    #1  
    Hello, i have a treo 650, my service provider is Cingular. I am going on a cruise some time in May, I went ahead and asked Cingular for an unlocl code for my phone. They were very nice and unlocked my phone the following day. I want to know how do those pre-paid sims work, and how well is the reception on them and if i can check my e-mail and stuff.
  2. #2  
    Your card has no impact on reception. What you can do with them and how well they work will depend on where you are, what that carrier offers there and how good their recption is. All the card does is provide a means to charge you for the services you are buying.

    I would check with the cruise line or tourist bureau where you are traveling and see what is offered. Unless the ship installed its own method of receiving / rebroadcasting signals, you aren't going to get service "out at sea".

    Royal carribean and Cingular offer this servcie

    http://cruises.about.com/od/cruisene...3celebrity.htm

    But when close to land, where they have towers you should get signal.

    You could yahoo the web with the location you going to. Yahoo gave me these for example:

    bahamas http://boards.cruisecritic.com/showthread.php?t=127709
    alaska http://cellphoneforums.net/t178671.html

    Also:

    http://www.cellularabroad.com/ppsc.html
    http://www.frommers.com/deals/other_...+you+Go+Abroad
    http://www.fodors.com/forums/threads...2&tid=34675047
    http://www.worldroom.com/pages/tript...ll-phone.phtml
  3. #3  
    I actually did have a situation where the SIM card did have an impact on reception. I had an old 32K SIM card in my treo a while back and I was experiencing a lot of dead spots in reception here on Eastern Long Island. They insisted nothing was wrong with the SIM. I got a 64K SIM and reception drastically improved. The old SIM card was holding onto the Cingular towers no matter what...even when an ex-ATT tower had a full signal. The 64K SIM picks up the stronger signal no matter what now which gives me better reception. Well this post does not answer any question of the OP, but thought I'd share a situation where the SIM did make a difference.
  4. #4  
    Quote Originally Posted by phattysalz
    I actually did have a situation where the SIM card did have an impact on reception. I had an old 32K SIM card in my treo a while back and I was experiencing a lot of dead spots in reception here on Eastern Long Island. They insisted nothing was wrong with the SIM. I got a 64K SIM and reception drastically improved. The old SIM card was holding onto the Cingular towers no matter what...even when an ex-ATT tower had a full signal. The 64K SIM picks up the stronger signal no matter what now which gives me better reception. Well this post does not answer any question of the OP, but thought I'd share a situation where the SIM did make a difference.
    It wasn't the SIM. I am also on easter LI whereabouts are you ? Lake Panamoka here. I have been using the 32k GemPlus SIM since the day Cingular reelased the 650.

    The problem was the design of the SIM card tray. The problem with the old SIM card was that it often lost physical contact with the electrical contacts in the phone. This would lead to reception erors and even reboots. The 64k SIM was a bit thicker and therefore manintained better contact. Cingular inmitiated a replacement SIM tray program with an extra rib that adds stiffness. Since then there have been no issues with the 32K SIMS.
  5.    #5  
    Well the both of you are right, the sim was design to be a bit thicker as well to improve on the reception. The 64k sim which is the one i have now is better because it picks up Cingular tower and At&t towers now that the companies had that merge.
  6. #6  
    I'm in Manorville.
  7. #7  
    Wow, I am off Wading River-Manorville Road....by Lake panamoka...we neighbors.....Tho I am the only one on the TC Frapper map.

    http://discussion.treocentral.com/sh...ad.php?t=98445

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