Straightforward e-mail-to-e-mail messages do n't always provide mobile push notifications , such as alert sounds , especially on feature phones . U.S. wireless carriers tend to double-charge customers for texts . Plans with unlimited texting are popular , but many find this option too expensive . Comment:
U.S. wireless carriers tend to double-charge customers for texts . Plans with unlimited texting are popular , but many find this option too expensive . Comment: