Why can't my contacts see photos I send via SMS?
Images are not actually sent via SMS, but instead use the MMS protocol. For this to work, you must have your MMS access point configured properly (this usually happens automatically):


Check with your contractors website for their MMS access point details. If they are not listed on their website, contact them.
Go to Settings -> Mobile Networks -> Access Point Names (or APNs on some devices) and add a

ProviderName MMS


where ProviderName is the name of your provider, e.g. Verizon.

Set all the values to what you got from Step 1. Some values might be missing, you can probably safely ignore them.