The demo works, but the complete lifecycle does not
Discovery and a first command may already work while onboarding, reconnect, offline recovery and repeat use remain inconsistent across phones and networks.
CONNECTED DEVICE APPLICATIONS
IoT Mobile App Development for Connected Devices
Build a maintainable mobile application that pairs, configures, controls and monitors real connected hardware across device and cloud states.
Discuss Your Mobile App↗When the mobile app must behave like part of the product
This service is designed for hardware teams that already have a device, firmware or prototype and need the mobile layer to become reliable, understandable and ready for continued delivery.
Device, app and cloud state disagree
A command can be accepted by one layer and still fail elsewhere. The product needs explicit state ownership, acknowledgements and recovery rules.
The existing application is difficult to extend
Tightly coupled device code, unclear dependencies and missing test paths make each firmware change or new product variant risky.
A mobile product layer grounded in real hardware behaviour
The engagement can cover a new application or a focused rebuild of the device-facing parts of an existing app. Scope is confirmed after reviewing the hardware, protocol and current source.
Onboarding and provisioning
Create a clear first-use workflow that reflects the actual connectivity model and firmware states.
- Device discovery and selection
- Pairing, binding and permissions
- Wi-Fi credentials and account association
Control and monitoring
Translate device commands, telemetry and errors into application states users and support teams can understand.
- Command and acknowledgement flows
- Live status and historical events
- Offline, busy and recovery states
Cloud and API integration
Connect the application to existing identity, device and operational services without hiding important product behaviour.
- Authentication and device ownership
- REST or event-based APIs
- Remote control and notification workflows
Release reliability
Verify the complete experience with representative hardware, accounts, phones and network conditions.
- Real-device scenario testing
- Diagnostic logging and error context
- Build, release and handover preparation
Move from hardware evidence to a release-ready application
- 01
Review the existing system
Inspect the physical device, protocol material, firmware behaviour, cloud dependencies and any current application source before defining the build.
- 02
Define states and responsibilities
Map onboarding, commands, responses, device state, cloud state and failure ownership so each layer has a clear contract.
- 03
Build the product workflows
Implement the agreed mobile architecture and user journeys in controlled stages with representative device feedback.
- 04
Validate and hand over
Test critical scenarios on real hardware, document supported behaviour and prepare the source and builds for continued ownership.
What the engagement is prepared to deliver
- Agreed mobile application source code
- Build and environment setup instructions
- Implemented device and cloud workflows
- Real-device test findings
- Known limitations and recovery behaviour
- Technical handover notes
Evidence that makes the first review productive
- A representative device or accessible prototype
- Available protocol, SDK or firmware interface information
- Existing source code when taking over an application
- Cloud API documentation and test access when cloud integration is included
Clarify the engagement before we begin
01Can YUNJI build the app around existing firmware?+
Yes. We first review the current firmware interface and preserve it where the behaviour is suitable. Any required firmware change is documented and agreed with the firmware owner.
02Can you take over an existing IoT mobile application?+
Yes. The first step is to establish a buildable baseline, map dependencies and isolate the device-facing workflows before deciding what should be retained, repaired or replaced.
03Does the service include cloud development?+
It can include cloud API and backend integration. The exact boundary depends on whether an existing cloud platform is available and which device identity, telemetry, command and operational functions are required.
04How is the application tested?+
Testing is based on agreed user journeys and failure scenarios using representative hardware, phones, accounts and network conditions rather than mocked device responses alone.
Related services and engineering resources
A Device-to-Cloud Handover Checklist
From Working Prototype to Maintainable Connected Product
NEXT STEP
Discuss Your Mobile App