Games v4.6.0
Does Honkai work on iPhone Duo?
It works, but with black bars. Honkai 4.6.0 is built with the iOS 26.2 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 26.2 SDK
- Version 4.6.0, read Oct 24, 2026
- iPad version
- Yes
- Layout already handles big screens
- Latest version
- v4.6.0
- Sep 27, 2026
- Duo in release notes
- Not yet
About Honkai
Honkai is made by miHoYo Games and first came out on the App Store in April 2023. It's only on the China App Store, where it has 247,631 ratings. Version 4.6.0 came out on Sep 27, 2026 and needs iOS 13.0 or later. It's free to download.
From its App Store listing:
这片银河中有名为「星神」的存在，祂们造就现实，抹消星辰，在无数「世界」中留下祂们的痕迹。你——一名特殊的旅客，将与继承「开拓」意志的同伴一起，乘坐星穹列车穿越银河，沿着某位「星神」曾经所行之途前进。你将由此探索新的文明，结识新的伙伴，在无数光怪陆离的「世界」与「世界」之间展开新的冒险。所有你想知道的，都将在群星中找到答案。 那么，准备好开始这段「开拓」之旅了吗？ 《崩坏：星穹铁道》是米哈游自研的银河冒险策略游戏。你将在游戏中登上星穹列车，造访寓居宇宙的万象世界，携手形形色色的旅伴，解救「星核」引发的种种危机，对抗「星神」践踏文明的意图。 【搭乘银河列车，穿梭万象世界】 冰河永冻的异星球、巡猎孽物的巨型舰队、美梦中的盛会之星、命运未卜的永恒之地、曾坠入画卷的乐园......列车停靠的每一站，都是前所未见的银河风貌！极寒地表上唯一温度正常的坐标，究竟隐藏着怎样的秘密？玉石妙算、几近仙法的长生种…
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 Honkai. 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 4.6.0 is built with the iOS 26.2 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 26.2 SDK
Latest release notes
Version 4.6.0 · Sep 27, 2026
全新4.6版本「月升之前，与兽共舞」现已推出！ 【全新剧情】 开拓任务「千星城」-「月升之前，与兽共舞」更新。 「月升之前，与兽共舞」 蠢动于幽暗的兽再度开口，索求一位神明作为祭品。在月亮重新升起前，唯有智者的血方能平息它的饥渴…… 【全新角色】 限定5星角色「真珠（欢愉•冰）」，可通过角色活动跃迁「沧海萃珠」获取。 【全新光锥】 限定5星光锥「献给明日的色彩（欢愉）」，可通过光锥活动跃迁「流光定影•献给明日的色彩」获取。 【全新装扮】 新增「风堇（记忆•风）」的时装「云边拾暖」。4.6版本更新后，时装「云边拾暖」上架「时装橱窗」，限时售价古老梦华1350。特惠时间结束后恢复原价古老梦华1680。 新增「绯英（欢愉•物理）」的时装「月待花时」。4.6版本更新后，时装「月待花时」上架「时装橱窗」，限时售价星琼2680。特惠时间结束后恢复原价星琼3280。 新增开拓穿搭-头饰「孤狼墨镜」，可通过活动「爱，幽灵与机器人」获取。 【全新场景】 「生研院」 全称「生命科学研究院」，是技术研发部主管亚婆离的私人研究中心。 【版本活动】 「爱，幽灵与机器人」 一条废弃机铠管线经由幽灵斯科特改造，竟变成了可为幽灵赋予肉身的「林登™具身机铠」生产线！可这位老友难得做回善事，居然被横空出世的拉克什米绊住了脚，你决定与伙伴们携手，帮他完成考核，从「绯闻女友」手下顺利脱身！ 「星际和平盛典：一镜到底」 星际和平娱乐倾力打造的大型影视真人秀《星际和平盛典：一镜到底》正式开机。即刻试镜，秀出你的战斗技巧，下一个动作巨星就是你！ 「星际幻宠」乐园 活动期间，开拓者可使用「潮玩礼券」在「星际潮玩」中抽取多款星际幻宠。星际幻宠可以编入幻宠小队跟随开拓者行动，也可以在「星际幻宠」乐园特定区域与「随宠小屋」中布设。 本期「星际潮玩」幻宠抽取活动中，可获得的幻宠款类包括：珍藏款猫猫狸、珍藏款奇美拉、经典款猫猫狸、经典款奇美拉。 「星际幻宠」乐园：游园伴手礼 活动期间，登录游戏即可领取「潮玩礼券」*6，「潮玩礼券」可用于抽取「星际幻宠」。 「星际碰碰好搭档！」 幻宠乐园开业之际，公司策划了一场「星际碰碰」活动，快与好友组队，一起完成挑战吧！ 「镇伏『贪饕』，汇聚愿力」 旧日星神「贪饕」渐趋苏醒，其力量正向外弥散，令生命迸发难以遏制的饥渴冲动……不过，听说阿哈来帮忙了？！ 击败被「贪饕」侵蚀的敌人，积攒愿力可解锁「潮玩礼券」*6、星琼*500、纪念奖章！还可在对抗「贪饕」侵蚀时获取增益！ 「巡星之礼」 活动期间，每日登录游戏即可获得签到奖励。完成7日签到累计可领取星轨专票*10！ 【其他内容】 新增敌方：「堕神之血•亚婆离」「狂兽的胚芽」 新增关卡：「侵蚀隧洞•密伶之径」，可获取隧洞遗器「戏梦点星的伶人」「贪噬禁果的异端」。 新增随宠类型「星际幻宠」，原有随宠视为常规随宠。开拓者可以幻宠小队的形式同时召唤3只星际幻宠并列队，也可以单独召唤星际幻宠。4.6版本期间，开拓者可通过「星际潮玩」幻宠抽取活动获取星际幻宠。 场景「派对车厢」中新增「随宠小屋」，开拓者可将拥有的常规随宠与星际幻宠布设在其中；还可通过「随宠小屋」前往位于场景「生研院」的「星际幻宠」乐园，并在特定区域布设随宠。 联机地图新增「联机生研院」场景，同时新增【邀请好友】功能，开拓者可主动邀请好友拜访「联机生研院」与「联机派对车厢」。 ※其他更新内容详情见游戏内公告。
Questions
Does Honkai work on iPhone Duo?
It works, but with black bars. Honkai 4.6.0 is built with the iOS 26.2 SDK, so iPhone Duo runs it in a phone-sized window on the inner display.
Does Honkai 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 Honkai 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 Honkai 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 Honkai 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 Honkai within about a day of its release and update this page.
What can I do about the black bars until then?
Use Honkai 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.