We've seen two smartphones that offer up to 24GB of RAM thus far. Those two phones are the RedMagic 8S Pro, and the Redmi K60 Ultra (Extreme Edition).
OnePlus Ace 2 Pro Review: Global first 24GB of RAM flagship smartphone
NOTE: China Version. No Warranty. This device is globally unlocked and ready to be used with your preferred GSM Carrier. THIS DEVICE IS NOT COMPATIBLE
OnePlus Ace2 Pro 5G PJA110 Dual 1TB 24GB RAM Factory Unlocked (GSM Only | No CDMA - not Compatible with Verizon/Sprint) China Version – Titanium Gray
OnePlus Ace 3 Launch Date Tipped; Said to Get Snapdragon 8 Gen 2 SoC, 100W Fast Charging
OnePlus Ace 3 Launch Date Tipped; Said to Get Snapdragon 8 Gen 2 SoC, 100W Fast Charging
NOTE: China Version. No Warranty. This device is globally unlocked and ready to be used with your preferred GSM Carrier. THIS DEVICE IS NOT COMPATIBLE
OnePlus Ace2 Pro 5G PJA110 Dual 1TB 24GB RAM Factory Unlocked (GSM Only | No CDMA - not Compatible with Verizon/Sprint) China Version – Titanium Gray
OnePlus Ace 2 Pro release - Up to 24GB RAM, SD 8 Gen 2 SoC and 150W charging from ~RM1902
Rumor: the OnePlus Ace 2 Pro will have up to 24GB RAM and 1TB storage - news
Xiaomi's Redmi K60 Ultra Is The Ultimate Price-To-Performance Flagship; Offers A Dimensity 9200+, 24GB LPDDR5X RAM, More, All For Under $500
OnePlus Ace 2 Pro vs Redmi K60 Ultra: Specs Comparison - Gizmochina
OnePlus Ace 3 to launch with new 1.5K and 2,600-nit AMOLED display - News
OnePlus Ace, OnePlus Nord CE 2 Lite 5G Spotted in Renders; OnePlus 10R to Feature 2 Charging Variants
OnePlus unveils Ace 2 pro with 24 GB RAM, 1 TB storage
OnePlus Ace 2 Pro: New Redmi K60 Ultra rival launches with Snapdragon 8 Gen 2, 24 GB RAM and 150 W charging - News