The i OS10 upgrade is no expected (expected to work well) on old i Phone handsets.
We have seen this trend in past when Apple user were able to update i Phone 4 to i OS 7 but i Phone 3GS i OS 7 update was not supported.
This trend is expected to stay consistent beyond i Phone 7 arrival, even with next i Phone 7S and i Phone 8 releases.
Here are the few highlights: Smartphone products draw inspiration from community ideas.The i Phone 7 availability on Amazon, Walmart, Best Buy and few other online stores are also expected soon.After i Phone launch date, the second question arises about the next i Phone 7 Cost/Price.Below are the expected i Phone 7 prices in other countries: You can see that best i Phone 7 price is United States with France being the most costly one.Apple has begun accepting i Phone 7 Plus and i Phone 7 pre-orders before it becomes available on stores.Let's go through the i Phone rumors and know when when is the next i Phone coming out with its specifications, features, price and availability: Reviewing Apple i Phone 7's release dates and price, the first million dollar question is obviously about the new i Phone 7 release date that when does i Phone 7 come out?then comes the new i Phone 7 specifications and price or anything else.Some users were able to get i OS 7 on i Phone 3GS through jailbreak method but it failed to perform well.Everyone from Mac World, Apple Insider and i Phone7buzz to GSMarena and Forbes is busy publishing i Phone 7 rumors and i Phone 7 news.The cupertino based tech form also manufactures state of the art PC machine including Mac, i Mac, Mac mini, Macbook Air and Mackbook Pro running Apple OS X software. Apple i Phone 7 i OS 10 update release features improved Siri with voicemails handling, improved 3D Touch, Apple's Home app and Customizable Control Center.Apple i OS 10 update for i Phone and i Pad debuts on June 13, 2016 is supported on device beyond i Pad 2 and i Phone 4S only.