This manual provides detailed instructions for the safe and efficient operation of your Maycall MC-398 Global Unlimited Range 4G LTE POC Walkie Talkie. Please read this manual thoroughly before using the device to ensure optimal performance and longevity.

Image: Maycall MC-398 Global Unlimited Range 4G LTE POC Walkie Talkie.
Upon unboxing your Maycall MC-398, verify that all components are present:

Image: Contents of the Maycall MC-398 product package, including two walkie talkies, batteries, charging accessories, SIM cards, and manual.
Video: Unboxing the Maycall MC-398 Global Walkie Talkies, showing all included components.
The Maycall MC-398 is a robust 4G LTE Push-to-Talk Over Cellular (POC) radio designed for extensive communication range and reliability. Key features include:

Image: Illustration highlighting the lifetime free SIM card service with no additional fees.

Image: Overview of the Maycall MC-398's unlimited range, 3000mAh battery, single/group call, global intercom, dual SIM, and 2G/3G/4G network support.

Image: Close-up view of the Maycall MC-398's dual SIM card slot for installation.

Image: Illustration showing the 3000mAh battery being inserted into the Maycall MC-398 walkie talkie.
To activate and pair your walkie talkies, follow these steps:
Video: A guide demonstrating the pairing process for the Maycall Global Walkie-Talkie.
To communicate, press and hold the large red PTT button on the left side of the device. Speak clearly into the microphone. Release the button to listen.

Image: The Maycall MC-398 walkie talkie demonstrating its high-brightness LED flashlight feature.
The device charges via a USB-C port located at the bottom. Connect the provided Type-C charging cable to the walkie talkie and a charging head. The battery indicator on the screen will show charging status.
Video: An introductory video showcasing the features and basic operation of the Maycall MC-398 Global Walkie Talkies.
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low battery; Power knob not fully rotated | Charge the battery; Ensure power knob is fully rotated clockwise. |
| No network signal / Offline status | SIM card not properly installed; Device not registered; Poor network coverage | Re-install SIM card correctly; Complete device registration via QR code; Move to an area with better 4G LTE coverage. |
| Cannot communicate with other devices | Devices not paired to the same group; PTT button not pressed correctly | Ensure all devices are registered and assigned to the same group; Press and hold the PTT button firmly while speaking. |
| Poor audio quality / Noise | Environmental interference; Microphone/speaker obstruction | Move away from sources of interference; Ensure microphone and speaker are clear of debris. |
| Feature | Detail |
|---|---|
| Model Number | MC-398 |
| Item Weight | 1.46 pounds |
| Product Dimensions | 4.45 x 1.4 x 2.36 inches |
| Batteries | 2 LR44 batteries required (included) |
| Number of Channels | 10000 |
| Talking Range Maximum | 3000 Miles |
| Water Resistance Level | Waterproof |
| Special Features | Integrated Flashlight, Long-distance, Power Saving Mode, Rechargeable |
| Compatible Devices | Maycall two-way radios, 4G LTE devices, USB-C chargers |
Your Maycall MC-398 Walkie Talkie comes with a 1 Year Manufacturer Warranty. For warranty claims or technical support, please refer to the contact information provided on the product packaging or the official Maycall website.
![]() |
Maycall MC-180 Walkie Talkie User Manual - Operation & Specifications Comprehensive user manual for the Maycall MC-180 two-way radio. Learn about basic operation, features like VOX and Scrambler, technical specifications, accessories, and FCC compliance. |
![]() |
Maycall MC-528 Walkie Talkie User Manual User manual for the Maycall MC-528 FRS walkie talkie, detailing its features, basic operation, specifications, accessories, and warranty information. |
![]() |
Fsas Technologies イネーブルキット: COA および ハイセイフティ用途ガイド Fsas Technologies PRIMEQUEST システム用イネーブルキットの Certificate of Authenticity (COA) ラベルの取り扱い、Windows Server ライセンス認証、およびハイセイフティ用途に関する注意事項を解説します。 |
![]() |
Manuel d'utilisation ONKYO HT-S3910DAB : Guide complet Home Cinéma 5.1 Explorez le manuel d'utilisation du système Home Cinéma ONKYO HT-S3910DAB. Apprenez à installer, configurer et utiliser votre système audio avec des instructions détaillées sur les connexions, la lecture, les réglages et le dépannage. |