Cellular device inspection service

Cellular Device Inspection Service for Global Wireless Compliance and Performance

As an ISO/IEC 17025 accredited laboratory, we deliver a comprehensive cellular device inspection service that verifies RF performance, protocol conformance, electromagnetic compatibility, SAR and EMF exposure, electrical safety, battery safety, environmental durability, and chemical compliance. Our cellular device inspection service supports manufacturers and exporters of smartphones, feature phones, tablets, IoT modules, mobile hotspots, and wearable cellular devices who must demonstrate conformity to 3GPP, ETSI, FCC, CE, and regional wireless regulations across the European Union, North America, the Middle East, and Asia. Every test is performed under our CNAS-accredited quality system, producing reports accepted by notified bodies, certification bodies, and procurement teams worldwide.

Product Samples We Regularly Test in Our Cellular Device Inspection Service

5G NR and 4G LTE smartphones — multi-band, multi-mode devices for global network access
Feature phones and basic cellular handsets — for voice-centric markets and senior-friendly devices
Tablets with cellular connectivity — for mobile broadband, enterprise, and educational applications
Mobile hotspots and customer-premises equipment — for fixed wireless access and portable Wi-Fi sharing
IoT modules and M2M cellular devices — for smart meters, asset tracking, and industrial telemetry
Wearable cellular devices — smartwatches, health monitors, and personal safety devices
Automotive telematics and cellular vehicle modules — for emergency call, navigation, and connected car services

RF Performance and Protocol Conformance Testing

Transmitter output power and frequency error per 3GPP TS 36.521 and TS 38.521 — the cellular device is operated in a controlled RF test environment, and the maximum output power, frequency stability, and modulation accuracy are measured to verify the transmitter meets the network access and coverage requirements for the target frequency bands.
Receiver sensitivity and block error rate per 3GPP TS 36.521 and TS 38.521 — the minimum input signal level at which the device can maintain the specified data throughput or voice quality is measured, confirming the receiver performs correctly under weak-signal and cell-edge conditions.
Occupied bandwidth and spectrum emission mask per ETSI EN 301 908 and 3GPP test specifications — the transmitted signal bandwidth and out-of-band emissions are analyzed to ensure the device does not cause interference to adjacent channels or other radio services.
Conducted and radiated spurious emissions per ETSI EN 301 908 and FCC Part 22/24/27 — unwanted emissions from the transmitter and the receiver are measured over a wide frequency range, verifying compliance with regulatory limits for spurious radiation.
Adjacent channel leakage ratio and error vector magnitude — the transmitter linearity and modulation quality are measured to confirm the device maintains clean signal transmission and interoperability with the base station.
Handover, cell selection, and reselection performance per 3GPP protocol test specifications — the device is tested against a simulated network to verify correct cell selection, handover between cells and radio access technologies, and re-establishment behavior under mobility conditions.
Voice over LTE and voice over NR conformance per 3GPP TS 34.229 and TS 38.508 — the device's VoLTE and VoNR call setup, handover, and audio quality are verified to ensure seamless voice service on modern packet-switched networks.
SIM/USIM interface and emergency call functionality per 3GPP TS 51.010 and regional requirements — the SIM card interface, PIN handling, and emergency call capability are tested to ensure the cellular device can access the network and make emergency calls when required.
Data throughput and latency verification per 3GPP TS 36.521 and TS 38.521 — the maximum downlink and uplink throughput and the round-trip latency are measured under ideal RF conditions to verify the device delivers the expected data rates for the declared category.
Over-the-air antenna performance per CTIA test plan and 3GPP TR 25.914 — the total radiated power and total isotropic sensitivity are measured in an anechoic chamber to verify the antenna design provides the required over-the-air performance for reliable network connectivity.
Hearing aid compatibility per ANSI C63.19 and FCC 47 CFR Part 20 — the RF emissions and telecoil coupling of the cellular device are measured to confirm compatibility with hearing aids and to support HAC labeling requirements.

Specific Absorption Rate and EMF Exposure Testing for Cellular Devices

Head and body SAR per IEC 62209-1, IEC 62209-2, IEEE 1528, and EN 50360 — the specific absorption rate is measured using calibrated phantoms and tissue-equivalent liquids for the required frequency bands and operating modes, verifying that the cellular device meets the regulatory exposure limits for head, body-worn, and limb configurations.
Simultaneous transmission SAR evaluation — the combined SAR from multiple transmitters operating at the same time, such as cellular, Wi-Fi, and Bluetooth, is calculated or measured to ensure the total exposure remains within the limit.
Power density measurement for mmWave devices per IEC/IEEE 63195 — for 5G devices operating above 6 GHz, the incident power density is measured to verify compliance with the applicable EMF exposure limits for millimeter-wave frequencies.
EMF exposure for body-worn and limb configurations — the device is tested in body-worn and limb-held positions to confirm it meets the regulatory limits when carried in a pocket, on a belt, or on the wrist.
Hearing aid RF emissions and T-coil performance per ANSI C63.19 — the near-field RF emission levels and the audio band magnetic field coupling are measured to assign the M-rating and T-rating for hearing aid compatibility.

Electromagnetic Compatibility and Electrical Safety Testing for Cellular Devices

Radiated and conducted emissions per ETSI EN 301 489-1, EN 301 489-52, and FCC Part 15 — the electromagnetic disturbance generated by the cellular device in all operating modes is measured to ensure it does not interfere with nearby electronic equipment and complies with EMC regulatory requirements.
Immunity to electrostatic discharge, surge, and fast transients per IEC 61000-4-2, IEC 61000-4-4, and IEC 61000-4-5 — the device is subjected to ESD pulses on accessible surfaces and electrical transients on power and data ports to verify uninterrupted operation and no permanent damage in realistic user and industrial environments.
Immunity to radiated RF fields per IEC 61000-4-3 — the cellular device is exposed to defined electromagnetic fields to confirm it maintains its function and does not suffer data loss or malfunction when used near base stations, Wi-Fi routers, or industrial equipment.
Electrical safety per IEC 62368-1, EN 62368-1, and UL 62368-1 — the device and its power adapter are tested for dielectric strength, insulation resistance, protective earthing, touch current, and abnormal operation to verify protection against electric shock, fire, and energy hazards.
Battery safety per IEC 62133-2, UN 38.3, and UL 2054 — the rechargeable lithium-ion battery pack is subjected to overcharge, short-circuit, thermal abuse, crush, and impact tests as part of the complete cellular device inspection to ensure safe operation and transport.
Charger and USB interface safety per IEC 60950-1 and USB-IF compliance — the charging port, cable, and power adapter are tested for overcurrent protection, connector durability, and compatibility to prevent overheating and damage to the device or the user.

Environmental and Mechanical Durability Testing for Cellular Devices

Ingress protection rating verification per IEC 60529 — the device is subjected to dust chamber exposure and water spray or immersion tests to confirm the declared IP code, such as IP67 or IP68, ensuring reliable operation in wet, dusty, and outdoor environments.
Drop, tumble, and impact testing per IEC 60068-2-31, MIL-STD-810, and customer protocols — the cellular device is dropped onto hard surfaces from defined heights and subjected to repeated tumbling to verify the enclosure, display, and internal components withstand accidental drops and rough handling.
Vibration and mechanical shock per IEC 60068-2-6 and IEC 60068-2-27 — the device is vibrated under sinusoidal and random profiles and subjected to shock pulses to simulate transport, vehicle use, and everyday impacts, with full functional verification after testing.
Thermal cycling and thermal shock per IEC 60068-2-14 — the cellular device is cycled between defined temperature extremes to verify the display, battery, solder joints, and enclosure withstand thermal expansion and contraction without cracking or performance loss.
Damp heat and humidity conditioning per IEC 60068-2-78 — the device is exposed to high temperature and high relative humidity for extended periods, followed by functional and electrical safety retests to confirm reliable operation in tropical climates.
UV and solar radiation resistance of enclosure and display per ASTM G155 and ISO 4892-2 — the plastic housing and screen are exposed to simulated sunlight to evaluate color fading, embrittlement, and loss of mechanical strength after prolonged outdoor exposure.
Salt spray and corrosive atmosphere resistance per ISO 9227 and ASTM B117 — the device and its exposed metal components are subjected to salt fog to evaluate pitting, corrosion, and coating degradation in coastal and marine environments.
Key, button, and touchscreen durability testing — the mechanical buttons and touchscreen are cycled through tens of thousands of operations to verify they maintain tactile response, electrical function, and wear resistance over the product lifetime.

Audio, Display, and Functional Performance Testing

Audio send and receive frequency response and loudness rating per 3GPP TS 26.131 and TS 26.132 — the acoustic performance of the earpiece, speaker, and microphone is measured to verify the device delivers clear and intelligible voice communication and meets the loudness rating requirements for handset and hands-free modes.
Display luminance, color accuracy, and contrast ratio per ISO 11664 and customer specifications — the brightness, chromaticity coordinates, and contrast of the cellular device display are measured to verify the screen meets the visual quality specification for the product class.
Touchscreen response accuracy and linearity — the touch panel is tested with a calibrated robotic finger to measure the touch accuracy, linearity, and multi-touch performance across the full display area.
Camera resolution, autofocus, and flash performance — the camera module is tested for image resolution, autofocus speed and accuracy, white balance, and flash intensity to ensure the device captures acceptable photos and videos under varying lighting conditions.
GNSS and GPS performance verification — the positioning accuracy, time-to-first-fix, and sensitivity of the global navigation satellite system receiver are measured to verify reliable location services.
Wi-Fi and Bluetooth co-existence and performance — the device is tested with simultaneous Wi-Fi, Bluetooth, and cellular operation to verify no interference, data throughput degradation, or connection instability occurs.
USB and charging function verification — the charging current, data transfer speed, and connector interoperability are tested to confirm the cellular device charges and communicates correctly with standard USB accessories.
Sensor calibration and performance testing — the accelerometer, gyroscope, magnetometer, proximity sensor, and ambient light sensor are calibrated and tested to verify accurate and stable sensor data output.

Chemical Safety and Restricted Substance Compliance for Cellular Devices

RoHS compliance per IEC 62321 and EU Directive 2011/65/EU — quantitative screening for lead, mercury, cadmium, hexavalent chromium, PBBs, and PBDEs in the printed circuit boards, solder, plastic housing, display, and cables to ensure the cellular device meets global substance restrictions.
REACH Annex XVII and SVHC screening — targeted analysis of Substances of Very High Concern including specific phthalate plasticizers, brominated flame retardants, and organotin stabilizers in any polymeric or elastomeric components.
Polycyclic aromatic hydrocarbons in rubber and soft plastic components per AfPS GS 2019:01 PAK — the 15 restricted PAHs are extracted and quantified in gaskets, cable jackets, and soft-touch surfaces that may come into prolonged skin contact.
Halogen content by combustion ion chromatography per EN 14582 — the total fluorine, chlorine, bromine, and iodine content is measured to support halogen-free declarations for environmentally conscious electronics manufacturing.
Packaging material heavy metal conformity per EU Directive 94/62/EC — verification of lead, cadmium, mercury, and hexavalent chromium sum concentration in the cardboard, foam inserts, and plastic bags used to package the cellular device.
Proposition 65 substance screening for the U.S. market — the device is screened for listed substances including phthalates, lead, and certain flame retardants to support California Proposition 65 compliance.

Report Recognition and ISO/IEC 17025 Compliance

Every test method described in this cellular device inspection service is included within our ISO/IEC 17025 scope of accreditation. Our technical reports are accepted by European notified bodies for CE and UKCA marking, by North American certification bodies for FCC and ISED compliance, and by regulatory authorities and customs agencies across the Middle East, Australia, and Asia. Whether you require a complete qualification dossier for a new cellular device platform, a batch release inspection for an export shipment, or a root cause failure analysis of a field-returned unit, our laboratory provides the measurement accuracy and wireless engineering expertise that the global mobile communications industry demands.