Which Phone has the Best Battery Life in 2021? Testing the OnePlus 9 vs 9 Pro vs Galaxy S21 Ultra vs Note 20 Ultra vs Oppo Find X3 Pro vs ROG Phone 5 vs iPhone 12 Pro Max! ▶ Get Surfshark VPN at https://surfshark.deals/techchap​ - Enter promo code TECHCHAP for 83% off & 3 extra months for free! #Battery #BestBattery #OnePlus9 #iPhone12ProMax #GalaxyS21 Notice: [Paid Links] As an Amazon Associate I earn from qualifying purchases. The Tech Chap is a member of the Amazon Associate Program, and can earn fees from links to Amazon.com and Amazon.co.uk. Can't get enough of your TECH? Why not SUBSCRIBE? (it's free!) 😄 ▶ YouTube: https://bit.ly/2UyCBGq 📷 Instagram: https://www.instagram.com/TheTechChap 🐦Twitter: https://twitter.com/TheTechChap 🎵 Music by Epidemic & Artlist Notice: [Paid Links] As an Amazon Associate I earn from qualifying purchases. The Tech Chap is a member of the Amazon Associate Program, and can earn fees from links to Amazon.com and Amazon.co.uk. Can't get enough of your TECH? Why not SUBSCRIBE? (it's free!) 😄 ▶ YouTube: https://bit.ly/2UyCBGq 📷 Instagram: https://www.instagram.com/TheTechChap 🐦Twitter: https://twitter.com/TheTechChap 🎵 Music by Epidemic & Artlist