BitJoy Blog

Explore travel tech, eSIM tips, gifting ideas, and stay connected wherever you go.

eSIM iPhone 15: What It Is and How to Activate It in 2025

eSIM iPhone 15: How to Activate, Regional Differences & Dual SIM (2026)

📅 April 25, 2026 - 11:00 AM

iPhone 15 supports eSIM on all models, eSIM-only in the US. Step-by-step activation, regional SIM variations, and dual SIM setup explained for 2026.

esim

Does AirDrop Use Mobile Data? iOS 17.1 Cellular Toggle Explained

📅 April 25, 2026 - 10:00 AM

AirDrop usually doesn't use mobile data, but iOS 17.1 added a Use Cellular Data toggle that lets transfers fall back to cellular. Here's how it works.

esimtravel

What is Data Roaming? Definition, How It Works & Costs (2026)

📅 April 25, 2026 - 9:00 AM

Data roaming is using cellular data on a foreign network when traveling abroad. Learn how it works, 2026 costs by region, and the cheapest ways to stay connected.

Best eSIM For Japan 2025 Guide Stay Connected Easily

esimtravel

Best eSIM for Japan in 2026: 11 Plans Compared by Price & Network

📅 April 25, 2026 - 8:00 AM

Traveling in Japan is incredible - but staying connected shouldn't drain your wallet. Using your home carrier's roaming can cost $7+ per megabyte (that's $7,000+ per GB with some US...