iFixit iPhone 3GS Replacement Battery Classification_ram-ddr2-800-udimm-2gb-1x-dr-fm This 2GB (1x 2GB) DDR3L

This 2GB (1x 2GB) DDR3L 1600 MT/s Single rank

Dramatically improve performance and handle larger user and application workloads in your mission critical workstations and servers with this 4GB (1x 4GB) DDR3 1333 MT/s 240-pin EUDIMM RAM module from Samsung

MTA18ASF1G72PDZ-2G1A1 Capacity 8GB (1x 8GB) Brand Micron Speed DDR4-2133 - 2133MT/s - PC4-17000 Voltage 1

Intelligent Read Disturb Management spreads the active read/write across the flash components eliminating data corruption caused by constant use

The second screwdriver is the Torx T5

iFixit iPhone 3GS Replacement Battery Classification_ram-ddr2-800-udimm-2gb-1x-dr-fm This 2GB (1x 2GB) DDR3LReplace your iPhone's battery. Battery life not what it used to be? Install a new battery in 16 straight forward steps and breathe new life into your iPhone 3GS. Brand new replacement part. Please Note this is just the replacement battery only, buy this part if you want the screwdriver, opening tool, and suction cup kit included. Contents: New 1219 mAh Replacement Battery Other tools you'll need: Phillips #00 Screwdriver used for internal and external