\n";
str+="Is it possible to change from post paid to prepaid and vice versa? \n";
str+="Ans: No migration is possible. It will be noted that most users will prefer to have a suitable\n";
str+="postpaid plan for use at home and have a prepaid plan for use while roaming. This will help\n";
str+="them to reduce their total expenditure.\n";
str+="
\n";
str+="Whether any grace period is given to recharge the account? \n";
str+="Ans: In case of limited plans Grace Period I is for 15 days. If recharge is done during this\n";
str+="period, the balance if any, will be carried forward. Grace period II is for 75 days. During this\n";
str+="period no balance will be carried forward. For unlimited plans Grace period of 90 days is given\n";
str+="to recharge the account.\n";
str+="