I am now owning an iPhone 4, with ios 6.1.3. I haven't upgrade to ios 7 yet because some crash and laggy that has been experienced by other iphone 4 owner
But I heard this new ios 7.1 has improved performance than ios 7.0 on iphone 4, even not as fast as ios 6.
Should I upgrade my iphone to ios 7.1? It is a huge decision because I am not intending to upgrade my phone to other model just yet, at least until around next year.
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