On mobile single player I used about 12 behemoth gateways to make a large pen. Lure titan into pen, place last gateway and tamed with Quetzel/cannon technique. Just go past render distance after each shot and come back and repeat. This was tedious but better than it drowning when it flees.
You hit it with cannons on a quetzal. Go for it’s head. It’s torpor won’t drain either so take your time. They can’t eat just stuff a platform saddle on the titan once KO’ed. You use daedons to heal it when it’s food level is low.
The Ark Mobile Single Player. Can be tamed using an enclosure. Better than spending a few hours trying to KO and have it drown. Requires 12 or so Behemoth Gateways. Set up in a rectangle or circle. Lure titanosaur into enclosure. Place last gateway. Now using your Queztal blast it’s head with cannon. Move out of render, return and repeat til KO.
Daeodons keep it from dying when it runs out of food. Or just use the command infinitestats. The pigs will need much meat or they will starve tho. You can also just put a couple pigs on it’s back along with like 50 tek troughs full of meat. Ultimate mobile base
If you try taming these guys, tame a Quetzal first and equip it with a platform saddle. Then, put 2 storage boxes on it and a cannon. Make sure you make LOTS of cannon balls. Then, shoot the titan in the head.
16 mek cannon shells to tame. Just run. Shoot. Run. Shoot. Soon as it get high enought torp it will flee. Chase it and land 3 hits quickly. Job done. 6 hours gets you a full heal. More if you missed shots or struggled to land hits consecutive without pause.