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An agent can use Expo’s remotely hosted EAS Simulator to reproduce a mobile bug, exercise a changed app build, and provide a recording of its run for a pull request. The practical workflow is to preserve the report as a test case, make a focused fix, run that same case on the changed build, and describe exactly what the evidence shows. EAS Simulator is an early-access offering, and its remote-session CLI commands are marked experimental.
What EAS Simulator does—and what it does not do
Expo describes EAS Simulator as an iOS and Android simulator hosted on EAS infrastructure that an agent can drive. Its service page depicts a workflow in which an agent installs a build, exercises the app, and verifies its work; it also describes a simulator session recording appearing on a pull request. Expo’s agent-skills guidance identifies cloud and agent-driven simulator use as use cases, including letting an agent click through an app and capture screenshots.
This is different from running Xcode’s iOS Simulator or an Android Studio emulator on your own computer. A remote session is useful when the host machine lacks a local simulator or when an agent needs a cloud environment to control the app. It does not, by itself, mean that the service automatically creates a pull request, runs every test, or proves the app is free of other defects.
Expo labels EAS Simulator early access, and its CLI reference marks remote simulator commands experimental. Availability, supported setup, and command syntax can change; check the current EAS CLI documentation and your project’s access before relying on a particular command.
#1 Best Overall
- Please note, this device does not support E-SIM; This 4G model is compatible with all GSM networks worldwide outside of the U.S. In the US, ONLY compatible with T-Mobile and their MVNO's (Metro and Standup). It will NOT work with other CDMA carriers, and it is also not compatible with their MVNO (Visible, Xfinity Mobile, US Mobile, Cricket Wireless, etc).
- Compatibility with certain third-party devices and accessibility accessories, including some hearing aids, may vary depending on manufacturer support, Bluetooth protocols, software compatibility, and regional firmware limitations. For additional hearing aid compatibility information, please refer to Samsung’s official support documentation.
- Camera: 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 50 MP, f/1.8, (wide), 1/2.76", 0.64µm, AF | 2 MP, f/2.4, (macro). Battery: 5000 mAh, non-removable | A power adapter is NOT included.
Turn the bug report into a reproducible test
Before asking an agent to edit code, reduce the report to a repeatable case. Preserve the reporter’s steps and conditions rather than paraphrasing away details that might explain why the bug occurs.
- Steps: the shortest sequence that triggers the issue.
- Expected result: what the app should do at the final step.
- Actual result: what happened instead, including visible errors or a crash.
- Context: platform, app/build version, relevant device profile, account and data state, and any conditions such as network availability.
- Attachments: crash details, logs, screenshots, or a screen recording supplied with the report.
Ask the agent to run those steps on the existing app before changing code and to report whether it reproduced the failure. That baseline helps distinguish a fix for the reported behavior from a change that merely looks plausible in source code. Expo’s product page presents a bug or crash report entering an agent queue, but does not prescribe a particular report template.
Rank #2
- YOUR CONTENT, SUPER SMOOTH: The ultra-clear 6.7" FHD+ Super AMOLED display of Galaxy A17 5G helps bring your content to life, whether you're scrolling through recipes or video chatting with loved ones.¹
- LIVE FAST. CHARGE FASTER: Focus more on the moment and less on your battery percentage with Galaxy A17 5G. Super Fast Charging powers up your battery so you can get back to life sooner.²
- MEMORIES MADE PICTURE PERFECT: Capture every angle in stunning clarity, from wide family photos to close-ups of friends, with the triple-lens camera on Galaxy A17 5G.
- NEED MORE STORAGE? WE HAVE YOU COVERED: With an improved 2TB of expandable storage, Galaxy A17 5G makes it easy to keep cherished photos, videos and important files readily accessible whenever you need them.³
- BUILT TO LAST: With an improved IP54 rating, Galaxy A17 5G is even more durable than before.⁴ It’s built to resist splashes and dust and comes with a stronger yet slimmer Gorilla Glass Victus front and Glass Fiber Reinforced Polymer back.
Make a focused change, then keep the test case intact
Once the agent has reproduced the issue, have it inspect the code path implicated by the observed behavior and make a targeted change. Keep the original reproduction steps unchanged for the post-change check. If the steps need to change because the agent discovered an important missing condition, document that condition instead of silently replacing the original case.
This is a practical review discipline, not a patch-size rule imposed by Expo. The point is to make the connection between report, code change, and verification understandable to a reviewer.
Rank #3
- Carrier: This phone is locked to Tracfone, which means this device can only be used on the Tracfone wireless network. Tracfone plan required, activating is easy, just 3 steps.
- DISPLAY: Immersive viewing on a 6.7-inch super-bright 120Hz display with powerful stereo speakers and Bass Boost for cinematic entertainment.
- CAMERA SYSTEM: Advanced 50MP Quad Pixel camera captures sharp, detailed photos and videos in any lighting condition
- PERFORMANCE: Lightning-fast 5G connectivity paired with a powerful processor and RAM Boost for smooth multitasking.
- BATTERY LIFE: Long-lasting 5000mAh battery with TurboPower charging technology delivers hours of power in minutes.
Build and start the app using the appropriate path
There are two related but distinct tasks: creating an installable simulator build and opening a remote EAS Simulator session. Do not confuse a locally running simulator with a hosted remote session.
Documented iOS simulator build path
Expo’s iOS simulator build tutorial configures an EAS Build profile with ios.simulator: true, builds the iOS simulator artifact, installs it, and starts the development server. This is a documented way to prepare an iOS simulator build; it is not by itself a command for starting a remote EAS Simulator session. The iOS simulator build reference also documents installing a selected or latest iOS simulator build with eas build:run -p ios and its --latest option.
Rank #4
- YOUR CONTENT, SUPER SMOOTH: The ultra-clear 6.7" FHD+ Super AMOLED display of Galaxy A17 5G helps bring your content to life, whether you're scrolling through recipes or video chatting with loved ones.¹
- LIVE FAST. CHARGE FASTER: Focus more on the moment and less on your battery percentage with Galaxy A17 5G. Super Fast Charging powers up your battery so you can get back to life sooner.²
- MEMORIES MADE PICTURE PERFECT: Capture every angle in stunning clarity, from wide family photos to close-ups of friends, with the triple-lens camera on Galaxy A17 5G.
- NEED MORE STORAGE? WE HAVE YOU COVERED: With an improved 2TB of expandable storage, Galaxy A17 5G makes it easy to keep cherished photos, videos and important files readily accessible whenever you need them.³
- BUILT TO LAST: With an improved IP54 rating, Galaxy A17 5G is even more durable than before.⁴ It’s built to resist splashes and dust and comes with a stronger yet slimmer Gorilla Glass Victus front and Glass Fiber Reinforced Polymer back.
Remote EAS Simulator session
Remote session setup is documented separately in the EAS CLI reference. It uses a platform and can include device or build selection. The documented session types are agent-device, appium, argent, and web-preview-only. The first three include an automation interface; web-preview-only does not. Because this feature is experimental, use the current CLI help and the setup supported by your project rather than treating an older example as guaranteed copy-and-paste syntax.
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After the fix is built and available in the simulator session, have the agent repeat the original steps on the changed app. The verification should identify the platform and build tested, the actions taken, what appeared on screen, and whether the original failure recurred. A recording or screenshot can make that run easier for a reviewer to inspect.
Best Value
- Charger NOT Included, 6.7" Super AMOLED FHD+, 90Hz Refresh Rate, 385 ppi, 800 nits (HBM), 1080x2340px, 5000mAh Battery
- 128GB, 4GB RAM, microSDXC, Exynos 1330 (5nm), Octa-Core, Mali-G68 MP2 or Mali-G57 MC2 GPU
- Rear Camera: 50MP, f/1.8 (wide) + 5MP, f/2.2 (ultrawide) + 2MP, f/2.4 (macro), LED flash, panorama, HDR; Front Camera: 13MP, f/2.0, Android 14, up to 6 major Android upgrades, One UI 6.1
- 3G: HSDPA 850/900/1700(AWS)/1900/2100; 4G LTE: 1/2/3/4/5/7/12/13/14/20/25/26/28/29/30/38/39/40/41/48/66/71, 5G: 2/5/25/41/66/71/77/78 SA/NSA/Sub6/mmWave - Nano-SIM + eSIM
- US Model – Global Connectivity – Compatible with Most GSM Carriers like T-Mobile, AT&T, MetroPCS, etc. Will Also work with CDMA Carriers Such as Verizon, Straight Talk.
Expo says a simulator session recording can land on the pull request as evidence. Treat it as evidence of the recorded run under its particular conditions—not as proof that untested screens, platforms, device configurations, or data states are correct.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Make the pull request reviewable
A useful pull request connects the report to the change and to the observed result. Include:
- A concise description of the reported problem and its impact.
- The code change and the reason it addresses the reproduced behavior.
- The exact reproduction steps and verification steps, noting any differences.
- The platform and build used for the simulator run.
- A link or embedded recording, screenshot, or other relevant run evidence when available.
The service page illustrates recording evidence on a pull request; it does not establish that every configuration automatically opens a PR or attaches a recording. The team still needs a reviewable change and an accurate description of what was tested.
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Remote builds can take longer to iterate on because the builder must set up its environment, download the project, and install dependencies. If local and cloud behavior differ, Expo’s build troubleshooting guide recommends checking environment variables, relevant tool versions, and whether the source files needed for the build are present in a clean clone.
- Confirm the remote build used the intended source revision and included the file containing the fix.
- Check that required environment variables and tool versions are available in the build environment, not only on the developer’s machine.
- Verify that the installed artifact is the intended simulator build before attributing a result to the code change.
- For a mismatch, record the conditions that differed; do not report a local result as though it came from the remote session.
Access and plan pricing are separate from simulator-session pricing
Expo’s EAS pricing page lists plan inclusions and subscription prices, but those plan figures are not simulator-session counts or a stated per-session EAS Simulator price. At the time the pricing page was reviewed, the Free plan included 15 Android and 15 iOS builds per month; Starter was listed at $19 per month and Production at $199 per month, both plus additional usage costs. These are volatile plan details, so check Expo’s current pricing page for current terms. The reviewed page does not state a per-session price for EAS Simulator.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
