Why so many SMS projects? Aren't cell phones expensive?

[blueroomelectronics]

Wow an actual answer.

Thanks. Questions.
Do you plan on leaving that cell phone in your car for $15 year? *($15 is very little money in North America, what is the annual income of a typical person in India?)
According to the world bank it's about $450US yearly. $15 is a big chunk of $450 to be able to unlock a car.
Does that $15 include cell phones with a serial port and SMS usage?
**broken link removed**

Added after 5 minutes:

And subscription that you are attached to only one service provider is not a must, here we have pre-paid sim cards .

Although prepaid it's still with only one provider, if they go out of business it's unlikely to be honored by another provider. Here if you don't use your prepaid phone it runs out at a set rate per month.

 

[glenjoy]

Wow an actual answer.

Thanks. Questions.
Do you plan on leaving that cell phone in your car for $15 year? *($15 is very little money in North America, what is the annual income of a typical person in India?)
According to the world bank it's about $450US yearly. $15 is a big chunk of $450 to be able to unlock a car.
Does that $15 include cell phones with a serial port and SMS usage?
**broken link removed**

Added after 5 minutes:

And subscription that you are attached to only one service provider is not a must, here we have pre-paid sim cards .

Although prepaid it's still with only one provider, if they go out of business it's unlikely to be honored by another provider. Here if you don't use your prepaid phone it runs out at a set rate per month.

Here if you will use your prepaid, means you are not loading credits in your phone, I think the sim will be discnnected from the network. Anyway, here you can pay PhP 15.00 for an unlimited sms messaging for 24 hours , that is from a service provider, another is PhP 20.00.

 

[Code Warrior]

Here in India Reliance Mobile giving FREE calling to their own network for one year after refiling the with Rs.1700/- (Approx. 35 US $) voucher. So here we can do experiments on calls, as calla to their network is FREE. And their network is CDMA.

Added after 5 minutes:

Now days here every one offering cell phone at a very cheap rate. Around Rs.700/- (16 US $). The handset are very basic. But you can do R&D with it.