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Had an idea.
Instead of carrying round a spare battery or one of those emergency battery packs I think I prefer to carry a very small spare phone.

This has the advantages:

1) No need to swap simcards
2) You can run password apps on a completely separate phone, true sandboxing. Google Authenticator for example.
3) 2 numbers if you need it, one for work, one personal
4) It's straightforward.

The only thing is that watchphones like the AK09 don't have j2me so OperaMobile and Google Authenticator are not possible.

Do you know what the smallest phone that can run j2me is? I have a SE W580i and it's pretty small but these things are never small enough.
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Posted: 2012-04-02 18:04:00
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Is the W880i a candidate?
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Posted: 2012-04-02 18:41:38
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i would get w810..............best cellphone ever made. (extremely sturdy and well-made)



ps..... i didnt say best camera or anything....i said best cellphone
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Posted: 2012-04-02 19:00:10
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Definately a candidate thanks... not sure worth the cash to replace a w850, half the thickness but still 1cm thick

I searched a bit more and found that there are newer watchphones coming through from china with "java" listed as a function, but will that actually run j2me stuff? I don't have much faith in these cheap watchphones... also, it would be outgoing calls only since the battery standby is so poor you'd need to keep it in flight mode, assuming it had a flight mode

I guess I could try disassembling my w850, trying to remove unneeded parts and making a new case... no that's ridiculous!
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Posted: 2012-04-02 19:08:19
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There used to be Twin SIM-cards add-ons, for an additional cost, with the most service provider here in Sweden.
They worked different from provider to provider.

You simply got a second SIM-card with the same telephone number as the first one.
By SMS messages you switched fro which card/phone that where to be primary (incomming and outgoing calls) and secondary (only outgoing calls).

The main reason behind Twin SIM-cards existence was that one phone was to be able to connect to the internet whilst the other phone where to have a open line for incoming calls.

Still possible to have calls re-directed from one SIM-card/phone to another, but you have to pay for the minutes on the re-direction between your phones...


As for j2me if that the same as M2MIDP 2.0 then the most SE phones from at least from 2008 and forward is compatible. One of my most loved SE phones the T280 is compatible.
Other phones are the T700, T650, W880(W880 is the slimmest SE AFAIK)


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Posted: 2012-07-16 13:27:32
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Based on your query above, your best choice would be these two:

Elm
http://www.gsmarena.com/sony_ericsson_elm-3057.php

Cedar
http://www.gsmarena.com/sony_ericsson_cedar-3404.php

Both powered by A200 with Java Platform 8.5 (JP8.5) runtime. the most functional J2ME platform ever created on a device, txtPro/Mix/txt despite with using touchscreens and updated UI are actually downgrades compared to the robust platform that is A200. J2ME in phones (specifically the A100/A200) offered the best functionality and compatibility of all J2ME enabled devices I've used and tried. No heap size/ jar size limitation, and had even developed their own APIs like OpenGLES, Accelerometer sensor, MSA (mobile services architecture) and Project cappuchin (using flash for the application UI), add to that the number of mods available on those SE phones. also several reviews of the past noted that A200 run .jar apps really fast, probably the fastest when excluding the blackberries.

Though sadly none of the models are dualsims

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Posted: 2012-07-16 14:56:03
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Both of those phones are bigger than I was hoping but the j2me implementation is good. Personally I don't see major advantages in a good j2me platform? All I'm looking for is Opera & Google Authenticator for the immediate future.

I've gone with a smashed up w880i I had spare at the moment... wondering about replacing it with something that might work better. A w580i has also worked ok but a little thick. I'm leaning towards buying a fully working w880i instead to replace it. I really like the thinness of it. It's weak though, so might need a clear case and that's gonna make it a bit thicker so why not go with another phone... then again, perhaps I cold beef up the chassis...

edit: Hang on a minute, the elm is only 14mm thick, that's very good and it can do loads more than a w880i... but it's a recent and modern phone... that said, I used to have a Nokia E55 which had good battery life, global free maps and all sorts (but can only really in english with that half size keyboard...)


edit2:
I had a notification that there was a reply to this post here but nothing is here?
I went with a Vodafone 352 in the end. It doesn't actually have j2me afaik but it des have some kind of version of OperaMini and email and all for £15 with a qwerty blackberry format keyboard! I'm impressed!

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Posted: 2012-07-16 22:32:57
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