Taking out a mobile contract
Q: There is a mobile company that has a promotion to purchase a phone in an 18 month scheme. Every month, we have to pay only 200 AED. 18x200=3600. The original price of the phone is 2700. The difference is 900. If I buy the phone at 2700 AED, then there is no calling or internet data packages. If I buy the phone on the contract, then I will get 1GB internet package, 200 local call minutes and 50 international call minutes. Is it permissible for me to buy the phone on contract?