Beijing Baidu Netcom Science & Technology Co.,Ltd
Navigation v22.1.20
Does Baidu Maps work on iPhone Duo?
It works, but with black bars. Baidu Maps 22.1.20 is built with the iOS 26.5 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
At a glance
- Inner display (7.6″)
- Black bars
- Outer display (5.4″)
- Works normally
- Built with
- iOS 26.5 SDK
- Version 22.1.20, read Oct 31, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v22.1.20
- Oct 30, 2026
- Duo in release notes
- Not yet
About Baidu Maps
Baidu Maps is made by Beijing Baidu Netcom Science & Technology Co.,Ltd and first came out on the App Store in July 2011. It has 44,567 ratings on the US App Store, averaging 4.7 stars. Version 22.1.20 came out on Oct 30, 2026 and needs iOS 13.0 or later. It's free to download.
From its App Store listing:
百度地图——科技让出行更简单！ 【智能导航】 -路况实时更新，推荐更优路线，智能躲避拥堵 -智能定位，GPS信号弱也能持续导航 -公交导航到站提醒，实时公交覆盖多城 【智能规划】 -提供包含打车、驾车、公交、步行、骑行、火车、飞机、客车、货车、摩托车等出行方式的智能规划方案 -未来通行时间智能预估，精准预估到达时间，规划路线更精准，更符合用户不同的出行或驾驶习惯 -全国范围内，提供多种交通方式组合的智能出行方案 -时间优先，躲避拥堵，少收费，不走高速等多种路线偏好任你选择 【低价打车】 -打车惊喜特惠，周周领大额红包 -多种车型智能比价，叫车快人一步 -打车有保障，隐私保护，全程安全陪伴 【智能语音】 -语音技术行业领先，可实现全端唤醒，全局交互 -喊“小度小度”，轻松查路线、搜地点、问天气，沿途搜等 -只需9句话，生成个人定制语音包，并支持地图全场景使用 【智能推荐】 -根据个人出行时间…
On the inner display
Apps built with older SDKs are placed in a phone-sized safe area on a black background. Everything works; you just don't get the bigger screen.
In Split View
iPhone Duo is the first iPhone that can show two apps side by side, and every app takes part — including Baidu Maps. Open it on the inner display, then add a second app next to it. You can save the pair and come back to it later.
Duo-specific features
None confirmed yet. Duo-specific features include side toolbars, layouts that react to the fold, and content on the outer display while the app is open inside.
Evidence & history
App build,
Version 22.1.20 is built with the iOS 26.5 SDK
Apple runs apps built with the iOS 26 SDK or earlier in a phone-sized window on the inner display.
- : Not confirmed yet → Black bars — built with the iOS 26.5 SDK
Latest release notes
Version 22.1.20 · Oct 30, 2026
百度地图 V22，更懂世界，更懂你！ - 手机 SR 导航首发，打开智驾视野，同享车机级时空智能基座 - 地点信息问小度想想，1.9 亿地图已验真信息，都是鲜活真数据 - 全域护航系统，全面覆盖人/车/路/环境，全方位、伴随式护航 - AI 副驾全链路、真双工语音交互，从行前到行中，全程陪伴 - AI 副驾 3D 实景互动上新，出游场景主动介绍景点、地标 - 车道级自研至真引擎，七大地貌实景呈现，四季变化动态还原 - 车道级全域路网全覆盖，从车位到车位，全程都是车道级 - 智驾级车位导航，优选车场提前掌握，场内泊车轻松到位 - 街景打卡上新，多样玩法趣打卡，随手记录城市街景变迁 - 古今地图上新，看朝代变迁，发现历史故事 - 城事地图上新，随时随地发现身边好玩活动 - 个性语音包/车标，持续上新，你的导航你做主 - CarPlay 车道级巡航，实时信息全面感知 - 打车车费护航，多收费当场退 - 酒店安心订，全网比价贵必赔
Questions
Does Baidu Maps work on iPhone Duo?
It works, but with black bars. Baidu Maps 22.1.20 is built with the iOS 26.5 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Baidu Maps work on the outer display?
Yes. iPhone Duo's 5.4-inch outer display behaves like a regular iPhone screen, so every iPhone app works there as usual.
Can I use Baidu Maps in Split View on iPhone Duo?
Yes. On iPhone Duo every app can be placed side by side with another app on the inner display — developers don't need to opt in. How comfortable it feels at half width depends on the app's layout.
Why does Baidu Maps have black bars on iPhone Duo?
Apps built with the iOS 26 SDK or earlier run in a phone-sized window on the inner display, and iOS 27 builds can still leave some space empty. The bars disappear once the developer rebuilds the app with the iOS 27.1 SDK — you only need to update the app.
When will Baidu Maps fill iPhone Duo's inner display?
When its developer releases an update built with the iOS 27.1 SDK or later. We read the SDK of every new version of Baidu Maps within about a day of its release and update this page.
What can I do about the black bars until then?
Use Baidu Maps on the outer display, where it works like on any iPhone, or put it in Split View next to another app on the inner display so less of the screen goes unused.