Literal question
How much did %rostertitle%'s spend/was billed on cellular telephone (pre-paid and/or post-paid) in the last month (exclude balances from previous bills, include monthly package cost and additional cost for data, text messaging, caller ID, call waiting, etc)
Interviewer instructions
Increasingly over the last few years telecommunications have become more and more personalized. This is particularly so for mobile phones. Previously the fixed line used by all members of the household was the principal means of telecommunications by phone. This has been replaced in the last four years by the mobile phone. In this question therefore we are asking the respondent to tell us if he/she owns a fully operational mobile phone and the amount she/he was billed in the last month for its use by a provider.
For pre-paid cell-phone the amount required is the amount spent on phone cards in the last 30 days prior to the survey reference week. In the case where the respondent uses a post-paid cell phone the amount required is the amount of the last bill. The amount of the last bill better reflects the amount of actual service used by the respondent even if he/she may have made only a part payment.