Actual Measurement Of The Stability And Speed Performance Of Malaysian Data Cards On Mobile Networks

Titled “Empirical Testing of the Stability and Speed Performance of Malaysian Data SIM Cards as VPS Backhaul Links in Mobile Networks,” this article conducts empirical tests and analyses to evaluate the feasibility of using data SIM cards (SIM/eSIM) as backhaul links for VPS. It aims to provide a reference for users who need off-site backups, temporary access to services, or cost-effective cloud solutions.

Overview of the Testing Environment: Use data cards from Malaysia’s major mobile carriers connected to 4G/5G network cards or LTE routers. The VPS is deployed on lightweight cloud servers or in local data centers, with a backhaul tunnel established through USB/serial ports or NAT traversal. Test metrics include download/upload bandwidth, RTT latency, jitter, packet loss rate, and connection stability.

Speed and latency performance: In actual tests, under 4G conditions, typical download speeds range from about 10–50 Mbps, while upload speeds range from 5–20 Mbps ； It can reach over 100Mbps when 5G coverage is good. In terms of latency, the RTT from domestic locations to Malaysia typically ranges between 30-120ms. Jitter and packet loss increase significantly at night or when signal quality is poor.

Stability analysis: Mobile networks inherently suffer from instability due to signal fluctuations, base station handovers, and operator policies (CGNAT, traffic shaping). Tests show that long-lived connection scenarios (such as database master-slave setups and real-time streaming) are more susceptible to impact, while short-lived connections or static content cached via CDN/reverse proxies remain relatively stable.

Suggestions for actual deployment: If you plan to use a data plan VPS to provide external services, you should combine domain name resolution with dynamic DNS, configure a reverse proxy, and enable TLS to avoid directly exposing the origin server’s IP address. To improve availability, it is recommended to combine it with multi-path load balancing, geographically redundant backups, and CDN. CDN can significantly reduce access failures caused by fluctuations in mobile connections.

Safety and high-security considerations: Although mobile links are flexible, they have limited resilience when faced with DDoS attacks. In a production environment, it is highly recommended to use third-party DDoS protection services or host the service on cloud-based DDoS protection nodes. Additionally, inbound traffic should be restricted to the internal network or IPs on an allowlist, to prevent attacks from overwhelming the entire service by clogging up the network links.

Purchase and Recommendation Strategies: If you need to purchase a Malaysian data plan or set up a corresponding VPS, you can give priority to carriers that offer static public IP addresses or have good enterprise-level connectivity ； At the same time, choose hosting providers that offer BGP, multiple backhaul options, or partnerships with CDNs/protection services. When purchasing, make sure to verify the APN configuration, peak bandwidth, and whether SIM cold backup is supported.

Overall Conclusion and Service Recommendations: Overall, VPSs connected via Malaysian data cards are suitable for temporary access, disaster recovery links, testing in different locations, and services with high tolerance for latency. If used for stable services targeting the public, it should be combined with a CDN and advanced DDoS protection, and a reliable provider should be chosen. DeXun Telecom is recommended as a partner here. DeXun Telecom has mature products and operational experience in VPS/servers, domain name resolution, CDN acceleration, and advanced DDoS protection. It can provide one-stop support for traffic card VPS solutions, from connection to protection, facilitating quick deployment and long-term stable operation. Users can contact DeXun Telecom directly to obtain customized purchase and deployment advice.