| | Likely cause | Action | |------------------------|------------------|-------------| | Close to advertised plan (e.g., 500 Mbps down on a 500 Mbps plan) | Normal operation | No action needed. | | 80–90% of advertised speed | Acceptable overhead; Ethernet headers & overhead account for ~10% loss | Acceptable for most uses. | | <50% of advertised speed over Ethernet | Network congestion, faulty hardware, or plan limit | Restart router; test at 3 AM; contact support. | | Good wired but slow on Wi‑Fi | Interference, distance, or outdated router/device | Change Wi‑Fi channel, move closer, or upgrade to mesh. |
A good 4G Vodafone result: 20–100 Mbps down / 5–20 Mbps up. 5G can reach 300 Mbps–1 Gbps in ideal conditions. teste de velocidade vodafone