Last week I bought a cheap china phone as my primary phone went to service center for 3 days.
It's this: http://icellmobiles.com/product_detail.php?&getID=133
I got the phone for Rs.500 (~US$8.4) including battery,charger,earpiece. And after my primary phone was back from service, I had the good time to open the phone and see what's inside.
It was a lightweight phone which looked similar to Samsung E2232 and had many useless things in it.
1. Camera: Worst camera ever seen, 96x68 res. What do you expect in such phone ? 😛
2. Media playback: It managed to play MP3/MP4 over TF card but sound or video quality will destroy your ears.
The two good things to mention:
1. The battery held the initial charge for the 3 days.
2. It has provision of using two GSM SIM at the same time.
So, it has a generic PCB. You can see two LCD connectors, extra switches (probably same board with different ROM for different model) and there's even a 4pin touchscreen connector at the top.
On the back of the PCB there is almost no parts as compared to ordinary Nokia/Samsung phone's motherboard. There is one small IC below battery compartment which looks like power management IC, one RDA8851A CPU, and one IC section shielded which is obviously the GSM unit. There's connction pads provided for vibrator, additional LED for torch, and a 6pin programming interface connector.
Oh yes, there's a hanging wire for Bluetooth antenna also. 😛
good pics .. can you add more details in a second part , It would be interesting to see a circuit diagram of that phone with the components listed.
Also you can also put up a topic how to use the $10 phone for making hi-tec Devices eg: Sending automatic alerts or running a device based on sms.
Hello, Arup I want to make $2000 donation for your website. Give me your bank a/c details or you will prefer paypal?