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According to Wikipedia: High Speed Packet Access and Evolved HPSA, HSPA+ has a theoretical maximum download of 84 Mbps and an upload of 10.8 Mbps. Using Dual Cell Technology, it can be doubled to 168 Mbps download and 22 Mbps upload. This suggests that the upload speed will not be anywhere close to the download speed. Doing a search for HSPA+ 21 Mbps, most ...


First I would jump into the developer options and play around with rendering settings in there. This is going to pertain to the GPU probably a lot more than the CPU. You can also enable some helpful rendering overlays to get visual feedback regarding touch areas, rendered areas, and gpu utilization. Unfortunately I can't say that one particular item or ...


This is probably a bug in the custom ROM you've installed. You should report it to the developer of the ROM, and either wait for it to be fixed in an update, or use a different ROM.


I recently found that same setting (i.e., number of processes allowed to run in background), and I reduced that setting on my GT-S7562L from "Standard Limit" to only 1. I immediately saw a significant improvement in performance, and so far there have been no problems. I made the change out of desperation - my phone had nearly morphed into a brick. It was ...

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