How to Set Default SIM for Calls and Data on Any Phone By Chester Takau · August 2026 On Android, go to Settings → SIMs (called SIM manager on Samsung) and tap "Calls," "Text messages," and "Mobile data" separately, choosing a different SIM for each if you want. On iPhone, go to Settings → Cellular, set your Default Voice Line, then scroll down and set a separate Cellular Data line. Both platforms let you run calls on one SIM and data on the other at the same time — you set the two independently, not as one combined choice. The short version Android: Settings → SIMs/SIM manager → tap Calls, Text messages, and Mobile data one at a time iPhone: Settings → Cellular → Default Voice Line, then set Cellular Data separately underneath Most dual-SIM phones run one active radio at a time (DSDS) — that's why data can pause on the other SIM during a call unless you turn on the data-during-calls toggle If your default keeps res...

iPhone eSIM Setup: How to Add and Switch eSIM Plans in 2026 By Chester Takau · July 2026 TL;DR Settings → Mobile Service → Add eSIM → scan QR or enter details manually iPhone 14 US models have no physical SIM slot — eSIM only You can store multiple eSIMs but only two active at once Switch active plans in Settings → Mobile Service anytime [IMAGE-PLACEHOLDER: iphone-esim-setup.png iPhone Settings screen showing Mobile Service eSIM activation flow] Setting up an eSIM on iPhone is straightforward once you know where to look. The interface has been stable since iOS 16 and the steps below apply to iPhone XS and later — which covers nearly every iPhone still in active use. Step 1: Check your iPhone is eSIM-compatible and unlocked Go to Settings → General → About and scroll to find "Available SIM" or "Digital SIM" in the list. If it is there, your phone supports eSIM. All iPhones from XS (2018) onward do. If you bought your ph...