[Windows Central Question]

my friend tried to send me a photo but I did not get it. on her phone it says that she sent it.

[RumoredNow]

MMS or picture mail needs to be configured properly on your phone.

You don't say what phone you have or what carrier...

Try a web search for "<carrier name> MMS settings" and save the page or copy the values down.

Do another search for "<phone model> set up MMS" to find out where to input those values.

[Ed Boland]

Correct. What RumoredNow is referring to is the MMS APN settings. Usually, they're automatically setup by your carrier. Like he suggested, do a search for "whatever carrier you're using's MMS APN settings". On Windows Phone 8.1, enter the given values in SETTINGS/cellular+sim/SIM settings/add MMS APN.

Note: the location of these settings may vary depending on phone model and OS/firmware version.

(Provided of course, your carrier doesn't have this section of settings locked.)