综上所述，考虑到手机的优点和缺点，我认为它是我们人类的一项伟大成就。

To sum up, considering the advantages and disadvantages of cell phone, I think it is a great achievement for our mankind.

youdao

当我用手机的时候，我的爷爷能说出手机属于哪个品牌，他也会告诉我手机的优点和缺点。

When I used my cellphone, my grandpa could say out which brand it belonged to, he also told me the advantage and disadvantage of my cellphone.

youdao

而这些额外的层，当然会导致手机难以升级到Android最新版本，更加拉大了Android手机优点和缺点的距离。

And these extra layers, of course, make it especially hard to update a phone to the latest version of Android, creating an even larger disparity between what Android phones can and can't do.

youdao