some weaker users may be better off learning the 2-handed technique
but yes ,you want to use a compact "take back"and try not to break the wrist(keep the wrist "layed back") too often during texting and dialing
Although, I think I should be pretty safe from cell phone elbow, because I don't believe in marketing hype from the cell phone vendors and their new gimmick every year mesmerized as "technology."
I use classic stuff, true quality. This one is manufactured by St. Vincent: