OnePlus 5T User Manual

This totally depends on how you will be using the phone. But if I were to choose, I'd go for Samsung Galaxy S8+. It's because Samsung Galaxy S8+ has water-resistance, microSD card, better display, more battery, and most of all better customer service. Customer service is what I'm always looking for when buying anything, I just want to be sure I'm safe if anything goes wrong with my phone. But the problem with the comparison is on the budget. OnePlus 5T is way cheaper than Samsung Galaxy S8+.Here are some of the specs of both phone.OnePlus 5T6.01 AMOLED displayQualcomm MSM8998 Snapdragon 835 Octa core 2.45 GHz16+20 MP rear, 16+ MP front camera64/128 GB of storage with 6 GB of RAM, no MicroSD slot3300 mAh batterySamsung Galaxy S8+6.2 Super AMOLED displayQualcomm MSM8998 Snapdragon 835 Octa core 2.35 GHz12 MP rear, 8 MP front camera64 GB of storage with 4 GB of RAM, with MicroSD slot up to 258 GB3500 mAh batteryThey may have their differences but in my opinion, you can't go wrong with either, both are great smartphones. Which one's better will come down to your personal preference.