If you want to reduce the cost of your mobile, then you should choose a plan in which you can get the facility of incoming for maximum time at the lowest cost.
BSNL has launched the plan for 1 year SIM validity in the cheapest price. BSNL gives 1 year validity on its sim on recharge of Rs. 365/- only. In this pack you can enjoy 2 GB data per day and unlimited call to all network per day for 60 days.
You have not recharge your mobile number up to 365 days, and you’ll get free incoming till one year.
BSNL gives 4G network in some states. BSNL will launch 4G network to all over India very soon. 3G service of BSNL is equal to 4G service.
No other mobile company have any plan for one year in so much price. So, take the SIM of BSNL or port your old mobile number to BSNL. For port your old number to BSNL send SMS “PORT Your Number” to 1900.
After few seconds you will get port number from your mobile company.
After that you can get BSNL sim from BSNL SIM seller on your old number.