What is the optimal screen size for an Android phone?

or:What is the optimal screen size for an Android phone?or:5 inches is sufficient plus you get so many options of handsets in this range : samsung,

or:What is the optimal screen size for an Android phone?

or:5 inches is sufficient plus you get so many options of handsets in this range : samsung, Reliv, HTC, Nexus and many others

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