I've migrated from Yoodo into TT. I would like to suggest that you shall stay in Yoodo if you need a stable network with less fancy upgrades. TT is okay if you don't mind a jumpy latency network, but it offers better goodies.

Mine also yoodo to tunetalk. I remember yoodo network was very good. But tunetalk one a bit bad. I'm on celcom as well. I find celcom quite good and quite consistent with yoodo. I guess being sister company has its advantages compared to a third party telco using the same station tower.

But tak care la. Tunetalk is cheap. Can't complain. For RM10 a month, I get to maintain my line + get 4gb data. I lock my network to 3g as H+ is smoother imo.

Too bad you're not using it much. I think got one forumer also report his free 10gb basic data going full speed. So you're actually getting 14gb. Anyway mine still flying at full speed for basic data. Just kept reloading RM30 until I get enough money for RM200 120gb yearly package.

No. The credit/ balance in our account is frozen during Grace Period.