Am using celkon campus A35K since 1 year . Thats why writing this review.
Am really hating this mobile . Because of its major drawbacks. Its getting too much heating effect, it getting heat at charging and using mobile for casual work, battery getting drain tooooo fast for its normal operations, you need to charge nearly 3-5 times per day. This mobile also facing hanging problem.
The only advantage of this mobile is low cost, Its better to buy other mobile at same cost.