China Unicom has completely lifted the 50MB—formerly 20MB—limit on app downloads over its 3G network, leading some users to question its intentions. Citing Chinese-language Sina Tech, M.I.C. Gadget reports that China Unicom issued a statement on the matter, saying, “After getting feedback from Apple, this [50MB limit for 3G] issue is resolved, and our Chinese account holders can now download apps [over 3G] with no file size limit.…