Pros: Customizable plans with unlimited ... you’ll get a prepaid MasterCard with values from $25 to $225, depending on the referral number. US Mobile's customer service is available 24/7.

Ultimately, Tello may not be as good a fit when your kid becomes an older teen, depending on their needs and your own rules.

O2 mobile phone customers will also see their airtime plans increase by £1.80 a month. Virgin Media O2 justified the hikes, saying they amounted to 12p and 6p a day, and referencing growing ...