Factory reset, new sim, new device or is traffic being "managed"?
At some point between 0600 and 1200 on 2025-12-10 the download speed on my 4G connection tanked and has remained consistently bad since then. The upload hasn't changed but also remains constant. Its a Zyxel NR5103EV2 hub running V1.00(ACIR.1)C0 in IP...