Friends send u R idea to build it.make way part of it to make it
How we can make a phone by raspberry pi and gsm and TFT touch screen of 5inch display with rtandroid applying
Hi @srikanth.pinnaboina5, welcome to the Cayenne commmunity!
What exactly are you trying to build here? Your own phone with a Raspberry Pi operating the guts of it?
I’ve often thought about getting an old Western Electric 2400 phone, -and putting a Pi inside w/a battery. Run “MagicApp”, and have a VOiP phone. I’ve seen several very innovative circuits to generate the 108VAC “ring” voltage. Gawd, I love those antique telephones! http://www.instructables.com/id/Low-tech-Rotary-Phone-made-wireless/