Cheap sim for SMS and GPRS data only?

Hello,

I need a sim (for use in a GPS data tracker) which is as cheap as
possible to run. It will never be used for voice, just SMS and GPRS data.

The tracker will live in a caravan, located in a storage site. The
tracker is configured to send me an SMS when it detects movement, and
report on the caravan battery voltage - which it can only do by GPRS.
(There will be a solar panel to recharge the battery)

Currently I have an ASDA PAYG sim, which is 6p/SMS (fine) BUT... 75p/day
for GPRS (upto 25mb).
I'm not expecting to send many texts, (only when the tracker detects
movement) but the GPRS data although tiny is frequent, and useful to
plot the battery voltage over time (computer recieving it at home),
however the 75p/day charge will soon add up.

So can anyone suggest an alternative? I don't mind if contract or PAYG,
as long as it's cheap!

Alan.

AlanD <alz_deane@nospam.ajdeane.co.uk> wrote:
> Currently I have an ASDA PAYG sim, which is 6p/SMS (fine) BUT... 75p/day
> for GPRS (upto 25mb).
> I'm not expecting to send many texts, (only when the tracker detects
> movement) but the GPRS data although tiny is frequent, and useful to
> plot the battery voltage over time (computer recieving it at home),
> however the 75p/day charge will soon add up.

Giffgaff... 6p/SMS. The data tariff is:

0.02p/KB from 0 to 1MB (ie 20p for the first M
0p/MB from 1 to 20MB
20p/MB upwards of 20MB

So it's pro-rata until you hit a daily cap of 20p, then it only costs more
once you go over 20MB.

Theo

AlanD wrote:

> I need a sim (for use in a GPS data tracker) which is as cheap as
> possible to run. It will never be used for voice, just SMS and GPRS data.

Three, SIM only, PAYG+12GB, remains active for 12 months, £70
You'd need to stick £10 of credit on it for text messages @10p each

http://store.three.co.uk/SIM_Only/Mo...You_Go?id=1205

You need a machine to machine contract aimed at this sort of device, but you may have difficulty only buying one as they are generally aimed at companies.

On 18/09/2012 23:54, Theo Markettos wrote:
> AlanD <alz_deane@nospam.ajdeane.co.uk> wrote:
>> Currently I have an ASDA PAYG sim, which is 6p/SMS (fine) BUT... 75p/day
>> for GPRS (upto 25mb).
>> I'm not expecting to send many texts, (only when the tracker detects
>> movement) but the GPRS data although tiny is frequent, and useful to
>> plot the battery voltage over time (computer recieving it at home),
>> however the 75p/day charge will soon add up.
>
> Giffgaff... 6p/SMS. The data tariff is:
>
> 0.02p/KB from 0 to 1MB (ie 20p for the first M
> 0p/MB from 1 to 20MB
> 20p/MB upwards of 20MB
>
> So it's pro-rata until you hit a daily cap of 20p, then it only costs more
> once you go over 20MB.
>
> Theo
>

Thanks, have ordered one.