# **Ericsson and ZTE Complete Post‑Quantum Encryption Trial Over Live 5G Networks in Early 2026**
In a development that could reshape the security baseline for global mobile infrastructure, **Ericsson and ZTE** said they completed a live trial of post‑quantum cryptography (PQC) over commercial 5G networks in early 2026. The collaboration — notable for crossing major vendor and regional lines — demonstrates how telecom suppliers are moving from laboratory proofs to field‑grade implementations designed to withstand the emergence of large‑scale quantum computers.
The trial focused on integrating PQC primitives into live 5G control and user planes to test real‑world performance, interoperability and manageability. Industry observers say the effort evaluated **hybrid cryptographic stacks** (classical algorithms paired with PQC key exchange and signature schemes), latency impact during handovers, key‑management at scale, and device firmware upgrade paths. Early results reportedly showed that with optimized software and selective hardware acceleration, the performance penalties can be contained to levels tolerable for most consumer and enterprise flows — though edge cases, particularly in ultra‑low‑latency slices and constrained IoT devices, remain challenging.
From a technical standpoint, the trial reflects the sector’s broader strategy: avoid “rip and replace” shifts and instead adopt **incremental, hybrid deployments** that preserve backward compatibility while mitigating “harvest‑now, decrypt‑later” threats. Vendors typically deploy lattice‑based key‑encapsulation mechanisms (the family that includes CRYSTALS‑Kyber, one of NIST’s PQC selections) together with existing TLS/DTLS and 5G NAS/IPSec tunnels to ensure seamless fallbacks. The Ericsson‑ZTE tests reportedly assessed both control‑plane protection and user‑plane encryption scenarios, as well as orchestration workflows for rolling out PQC profiles across live subscriber populations.
The collaboration carries geopolitical weight. Cross‑vendor trials between a European supplier and a major Chinese vendor provide a rare datapoint in a fractious regulatory landscape where governments are weighing security assurances, supply‑chain diversity and standards influence. For operators, cross‑vendor interoperability is essential: fragmentation would slow deployment and increase costs. Regulators and standards bodies — including 3GPP, IETF and national cybersecurity agencies — will be watching for concrete interoperability results to inform certification and compliance roadmaps.
Practical adoption still faces hurdles. Key size and computational overheads for some PQC schemes can strain legacy user equipment and radio access network elements. Certification cycles, device firmware rollouts, and harmonized operator policies will be required to move from trials to commercial service. There is also a market challenge: many operators will need a clear cost‑benefit case to prioritize PQC upgrades over other pressing network investments like Open RAN and private 5G.
Looking ahead, the trial marks a **pivotal step** rather than a finish line. Expect accelerated standard workstreams, further multi‑vendor field tests, and initial incremental commercial rollouts aimed first at enterprise slices and regulated sectors such as finance and critical infrastructure. If momentum continues, operators could begin offering opt‑in quantum‑resilient connectivity within a two‑to‑three‑year horizon, pushing the industry toward a new security baseline that anticipates — rather than reacts to — the quantum era.
