Abnormal Battery drop - mobile network signal??

[Magnanimity]

I had this same screen showing up tonight after I finally figured out from Straight Talk today how to re-enable my MMS. I switched my data settings to do so, with their help. Data works, but I am shocked at how fast my phone is draining. Full battery, and after 1 hr, 7 min, I'm down to 76%. I did make a phone call.