Aircel INQ Mini 3G is one of the most affordable 3G Mobile phone with built-in Social media features @ cheap price.
Aircel INQ Mini 3G Mobile Features:

Smart address book which integrates all infos
Changeable battery covers (Yellow, Black, Pink, RED, Blue or Green)
You can Also make skype calls from Your Phone
Widget based [...]

Aircel INQ Chat 3G – Aircel partnered with INQ to launch multifunctional QWERTY phone with high speed 3G connectivity and easy to access popular Social Networking site @ attractive price.
INQ Chat 3G mobile phone features:

2.4″ QVGA Display
3.2MP Camera
Integrated Facebook, Twitter, Skype and Windows Live Messenger
Bluetooth and Expandable memory

Aircel INQ Chat [...]

Aircel peek is small portable email device which allows users to send and receive email on the move and available at cheap price in India.

Aircel Peek Features:

QWERTY keypad
You can configure up to 3 email accounts
Push E-mail
Work anywhere with GPRS Connnection
You can save max 5000 emails
Store 1000 Contacts
Excellent Battery [...]

Aircel Pay Per Second Plan:

Starter Kit with Life Time Validity: Rs. 49/- Indian Rupee (INR)
Talktime: Nil
Local Calls @ 1 paise/second
STD Calls @ 1 paise/second for first 10,000 seconds after that 2 Paise/sec
International and SMS Charges as per prepaid plan
Roaming charges as per plan

Existing subscribers can get this Pay Per [...]