Miyoo Mini Plus Review

Overview

The Miyoo Mini Plus is the handheld the retro community keeps recommending no matter how many newer devices show up. Launched in March 2023 as the follow-up to the original Miyoo Mini — a device so popular it sold out in minutes and won Retro Dodo's handheld-of-the-year award while remaining nearly impossible to buy — the Plus took the same vertical, Game Boy-style formula and made it genuinely usable: a larger 3.5-inch screen, a bigger 3,000mAh battery, built-in Wi-Fi, and a proper set of four shoulder buttons, all wrapped in a body that weighs around 145 grams and disappears into a jeans pocket.

Three years and dozens of rival launches later, it is still the default answer to "what's the best pocket handheld?" across r/SBCGaming and r/MiyooMini, and it remains one of the most-gifted devices in the hobby. The pricing tells the story: the official Miyoo store sells it at $56.99 (regularly $79.99), AliExpress listings sit around $45–55, and Amazon bundles with Onion OS preinstalled and a carry case run $75–85. For that money you get flawless emulation of everything from the NES through the PS1, the most polished custom firmware in the budget class, and a form factor that actually gets used — the strongest compliment a portable can earn.

The honest framing matters before you buy: this is a "casual handheld" with a hard performance ceiling, no analog sticks, and stock software that almost everyone replaces on day one. Owner feedback is overwhelmingly positive, but it comes with a consistent list of post-purchase surprises — the bundled microSD card fails, hands cramp without a grip, and a minority of units ship with screen-adhesive or light-bleed quirks. None of that stops the Mini Plus from being the best ultra-portable emulator handheld you can buy in 2026. It just means you should go in knowing exactly what it is: a pocket PS1 machine with the best software ecosystem in its class, not a do-everything emulation box.

Build Quality and Design

The Mini Plus measures roughly 108 x 78.5 x 22.3mm — slightly taller and thicker than a deck of cards — and its ABS plastic shell feels dense and reassuring rather than cheap. Reviewers consistently describe it as a device that "just works": no creaking, no flex, and it sits flat on a table, a small courtesy several rival handhelds skip. The matte finish avoids fingerprint smears, and the color options — black, gray, white, and transparent black or purple — give it the charm that made the Mini a cult item.

The controls are where this device punches above its price. The d-pad is routinely called one of the best stock d-pads in the budget category: accurate, responsive, and precise enough for platformers, fighting games, and anything with fast diagonal inputs. The face buttons use the glossy SNES-inspired color scheme and deliver a satisfying click, though the high-gloss finish gets slightly slippery during long sessions. The shoulder buttons were a major revision over the original Mini — L1/L2/R1/R2 are all present, larger, and easier to reach, with the R2/L2 pair slightly raised so fingers can find them by feel. Owners with larger hands still describe the stacked shoulder layout as a bit cramped, which is the trade-off of the form factor rather than a defect.

The small stuff is where the design shows its budget roots. The power button sits on the top edge right next to the volume rocker and is easy to press by accident. The battery door is famously tight — Retro Dodo's reviewer gave up on opening it entirely. And quality control is a genuine lottery on the margins: community reports document screen-adhesive separation on some units (a 10-minute fix with B-7000 adhesive that owners share on r/SBCGaming), light bleed on early production runs, and "screen roulette" variance in color temperature between units. Most units are fine; the reports are persistent enough that buying from a seller with easy returns is sensible advice rather than paranoia.

Key Features

• 3.5" IPS display at 640x480 (4:3) — Roughly 228 pixels per inch, 10 brightness levels, and enough punch to stay visible outdoors short of direct sunlight. It is the best screen in the pocket class and looks far more expensive than the price suggests.
• SigmaStar SSD202D chipset (dual-core Cortex-A7 at 1.2GHz) with 128MB DDR3 — Modest silicon that is perfectly matched to the 8-bit through PS1 lane this device occupies. The 128MB figure alarms newcomers; in practice it is enough for everything this handheld is built to run.
• 3,000mAh battery — Real-world results on Onion OS: roughly 6.5–7.5 hours on Game Boy and SNES titles at medium brightness, about 5 hours on PS1, per the testing data PropelRC published from its 30-hour battery run. Charging takes about two to two and a half hours over USB-C, including modern C-to-C chargers.
• 2.4GHz Wi-Fi — Unlocks RetroAchievements, over-the-air firmware updates, wireless ROM transfer, and basic netplay. A small antenna that adds a surprising amount of quality of life.
• Onion OS — The community firmware that defines the device: GameSwitcher for instant resume between titles, a Package Manager for enabling only the systems you want, themes, activity tracking, box-art scraping, guest mode, and auto-save on shutdown.
• Save states and rewind — Instant save states on every system, plus a rewind feature (hold L2+R2) that turns brutal retro games into a forgiving experience.
• USB-C, 3.5mm headphone jack, single microSD slot — No internal storage, no Bluetooth, no video output. The jack and C-to-C charging are the notable inclusions; the rest is the price of the size.

Performance

Performance needs to be judged against the device's own lane, and in that lane the Mini Plus is essentially flawless. Testing data from PropelRC's 47-game session and RetroHandheldHQ's system-by-system table line up closely with community consensus:

• Game Boy, GBC, GBA, NES, SNES, Genesis, Neo Geo, arcade (FBNeo) — Perfect. Full speed across the board.
• GBA is the standout — The 4:3 screen, saturation, and comfortable shoulder buttons make this the community's favorite way to play Game Boy Advance, period. Several sources call it the best GBA device under $100.
• PS1 — RetroHandheldHQ's testing puts roughly 90–95% of the library at full speed. Most 3D titles run smoothly; the heaviest ones (Gran Turismo 2 is the recurring example) show occasional slowdown but stay playable. Final Fantasy VII and Castlevania: Symphony of the Night are cited as full-playthrough clean by multiple testers.
• SNES enhancement chips — SuperFX and similar chips run fine with Onion OS's optimizations.
• Nintendo DS — 2D games are playable; 3D titles struggle (one documented example: Pokémon HeartGold dropping to around 45fps in a dense city area).
• N64, PSP, Dreamcast, Saturn — Out of reach. This is the hard ceiling, and no firmware will change it.

The lack of analog sticks is the one real gameplay constraint within the supported library. It eliminates Ape Escape and twin-stick PS1 titles entirely, but as testing notes from PropelRC point out, roughly 95% of the PS1 library is d-pad-friendly, so the practical impact is small. Input response draws no latency complaints anywhere in the research — the d-pad's accuracy is the most-praised element of the whole device.

Battery behavior is consistent across sources: stock firmware manages only about 4 hours, while Onion OS's power optimization pushes the same cell to 6–7.5 hours depending on system and brightness. The one weakness is sleep mode, which owners describe as unreliable for anything beyond a few hours — powering down fully is the safer habit. Charging from empty takes roughly two hours, and the USB-C port accepts C-to-C cables, which the original Mini could not.

Software and Setup

The stock OS is the weakest part of the experience, and every source agrees. It is functional — RetroArch underneath, menus simple enough for newcomers — but it feels abandoned: Retro Dodo's reviewer concluded that Miyoo dumped a basic build on the device knowing the community would fix it for free, a sentiment echoed across owner feedback. Stock firmware also lacks Nintendo DS support entirely and drains the battery noticeably faster.

Onion OS is the real reason to buy this device. Installation takes 15–30 minutes following the Retro Game Corps guide: format a fresh microSD card, flash the Onion OS image, drop BIOS files and ROMs into the right folders, insert, and let the installer run. The upgrade transforms the device — snappier menus, box art, GameSwitcher resume, RetroAchievements, themes, and roughly three extra hours of battery life. Community consensus is blunt: if you are not going to install Onion OS, you might as well buy a different handheld.

The one mandatory companion purchase is a quality microSD card. The bundled card is the single most common failure point reported by owners — frozen splash screens, missing games, and corrupted saves all trace back to it. The standing advice across every review and subreddit thread is to treat the included card as disposable and budget $10–15 for a SanDisk or Samsung card.

Pros and Cons

Pros:

• Genuinely pocketable at ~145g — the rare handheld that lives in a jeans pocket and actually gets carried
• One of the best d-pads in the budget class, with satisfying buttons and a proper four-shoulder layout
• Excellent 3.5" IPS screen that punches well above the price, in a perfect 4:3 ratio for the library
• Onion OS — the deepest, most polished custom-firmware ecosystem in budget handhelds, still actively maintained
• Flawless NES through PS1 emulation; arguably the best GBA machine under $100
• Real 5–7.5 hour battery on Onion OS, USB-C with C-to-C support, and Wi-Fi for RetroAchievements and wireless transfers
• A massive, thriving community: setup guides, themes, accessories, and years of long-term support

Cons:

• Hard performance ceiling at PS1 — N64, PSP, and Dreamcast are out of reach
• No analog sticks — a slice of the PS1 library and most DS games are impractical
• Stock OS is mediocre; Onion OS is effectively mandatory (free, but still homework)
• Bundled microSD card is unreliable — plan to replace it immediately
• Ergonomics: hands fatigue past 30–45 minutes without a grip; shoulder buttons feel cramped for larger hands
• QC lottery: screen-adhesive separation, light bleed, and color variance affect a minority of units
• Weak sleep mode, 2.4GHz-only Wi-Fi, no Bluetooth, and no video output

Who Should Buy This

Buy the Miyoo Mini Plus if your gaming happens in pockets: commutes, lunch breaks, waiting rooms, flights. If your library runs from the NES era through the PS1 — and especially if you love Game Boy Advance — this is the best way to carry it, and the $45–70 price makes it one of the easiest recommendations in all of gaming hardware. It is also the default gift pick for nostalgic casual players, and it holds its value in the community, so it is a safe "always-with-me" second device alongside a more powerful handheld.

Skip it if you need N64, PSP, or Dreamcast (that is Anbernic's H700 line or the TrimUI Smart Pro's territory), if you want analog sticks for PS1 3D titles, if TV output or Bluetooth audio matter to you, or if the idea of a 30-minute setup session and a card swap is a dealbreaker. And if you have larger hands, budget $10–15 for a grip case before you budget for games — it makes the difference between a 30-minute device and a two-hour one.

Alternatives to Consider

• Anbernic RG40XX H (~$70) — The closest rival and the community's other default budget pick: same performance class (H700 chip), a slightly larger 4-inch screen, dual analog sticks, and a more comfortable horizontal shell. Better for long sessions and twin-stick games; noticeably less pocketable.
• TrimUI Smart Pro (~$70) — The budget widescreen answer: a 4.96-inch 720p IPS panel that makes PSP games look great, in a thin horizontal body. Choose it if your library leans widescreen; the Mini Plus wins for 4:3 libraries and pocketability.
• Anbernic RG556 (~$185) — The step-up for PS2 and GameCube ambitions: a 5.48-inch 1080p AMOLED with hall-effect sticks. It costs roughly three times as much and shares none of the Mini Plus's pocket appeal, but it plays the sixth generation the Mini Plus cannot touch. Read the full review.
• Retroid Pocket 5 (~$199) — The full-power answer if your library runs past PS1 into PS2, GameCube, and PSP: a 5.5-inch 1080p OLED with a Snapdragon 865. Our Retroid Pocket 5 review covers why it ended the budget-versus-premium argument — but for pure pocket play, it is triple the size and price of the Mini Plus.

Verdict

The Miyoo Mini Plus earns its reputation honestly. It does exactly what it promises — flawless PS1-era emulation in a genuinely pocketable 145-gram body with the best software ecosystem in the budget class — and it has done it for three years without being dethroned. Press consensus reflects that: RetroHandheldHQ and PropelRC both score it 8.5/10 in their 2026 reviews, and Handheld Gaming Community gives it 9/10, with software and screen as the universal high points. Owner sentiment across r/MiyooMini and r/SBCGaming is similarly warm, with the same caveats recurring: replace the card, install Onion OS, consider a grip.

The limits are real but fair, and they are the price of the form factor rather than defects: no analog sticks, a hard ceiling at PS1, mediocre stock software, and a QC lottery on the margins. Score it against what it claims to be — the best ultra-portable emulator handheld — and it is still the device that ends the argument in 2026. If your library stops at the PS1 era and your pocket is the destination, nothing this small plays these games this well.

Score: 8.6/10 — Excellent. The best ultra-portable emulator handheld in 2026: flawless PS1-era emulation, the deepest custom-firmware ecosystem in the budget class, and a form factor that actually gets used — provided you replace the bundled card, install Onion OS, and keep expectations at the PS1 ceiling.