The main difference between the Retroid Pocket 4 Pro and the RG-556 is power.
The Retroid Pocket 4 Pro plays everything up to PS2 well, while the RG-556 tops out at Wii.
Other differences
- The RG-556 has an AMOLED screen with true blacks; the Retroid Pocket 4 Pro uses an IPS panel.
- The Retroid Pocket 4 Pro runs on the MediaTek Dimensity 1100, the RG-556 on the UNISOC Tiger T820.
Which is better
Which fits in a pocket better?
Retroid Pocket 4 ProThe Retroid Pocket 4 Pro (184.8 x 82.6 x 15.8 mm, 261 g). The RG-556 is 223 x 90 x 15-25 mm, 331 g. Neither fits a jeans pocket; think jacket pocket or bag.
Which is better for PS2 games, the Retroid Pocket 4 Pro or the RG-556?
Retroid Pocket 4 ProThe Retroid Pocket 4 Pro. It scores 86 out of 100 for PS2 against 74.
Which costs less?
RG-556The RG-556, at about $175 at launch against $199. Prices today vary by store and the used market.
Which is better for GBA games?
RG-556The RG-556. GBA games fill 67% of the RG-556's screen at 6x with even pixels, against 61% of the Retroid Pocket 4 Pro's screen at 4x.
Which has the bigger battery?
TieAbout the same: 5,000 and 5,500 mAh.
Side by side
| Retroid Pocket 4 Pro | RG-556 | |
|---|---|---|
| Launch price | $199 | $175 |
| Released | Jan 2024 | Mar 2024 |
| Plays well up to | PS2 | Wii |
| Shape | Horizontal | Horizontal |
| Software | Android | Android |
| Chip | MediaTek Dimensity 1100 | UNISOC Tiger T820 |
| Memory | 8 GB | 8 GB |
| Screen | 4.7 inch IPS 16:9 | 5.48 inch AMOLED 16:9 |
| Resolution | 1334 x 750 | 1920 x 1080 |
| Battery | 5,000 mAh | 5,500 mAh |
| Weight | 261 g | 331 g |
| Size | 184.8 x 82.6 x 15.8 mm | 223 x 90 x 15-25 mm |
| Analog sticks | Double, symmetrical | Double, asymmetrical |
| Hall effect sticks | Yes | Yes |
| L2 and R2 | Yes, stacked | Yes, stacked |
| Analog triggers | Yes | Yes |
| Wi-Fi | Yes | Yes |
| Video out | Yes | Yes |
| Headphone jack | Yes | Yes |
Green marks the better value where one is clearly better. Prices are launch prices.
Emulation
- Retroid Pocket 4 ProRG-556
- Game Boy
- NES
- Genesis
- GBA
- SNES
- PS1
- DS
- N64
- Dreamcast
- PSP
- Saturn
- GameCube
- 3DS
- Wii
- PS2
- Switch
100 means the system runs at full speed with no known issues.
Full details
We may earn a commission when you buy through these links.
More comparisons
Why this pair: buyers weigh these two against each other. 250 comments by 146 different people compare them in community discussions, and 27 post titles name both. Specs, emulation scores and launch prices from the retrocatalog.com handheld database.

