Switching Between eSIM and Physical SIM

Most modern smartphones support dual SIM - a physical SIM and an eSIM working simultaneously. Here's how to manage both effectively.

Understanding Dual SIM

When you have both a physical SIM and an eSIM:

• Both can be active at the same time
• You choose which handles data, calls, and messages
• You don't need to remove your physical SIM to use the eSIM

Setting Up Dual SIM

iPhone:

1. Go to Settings → Cellular
2. You'll see both your physical SIM and Roambit eSIM listed
3. Configure each line:

Cellular Data (Internet):

• Tap Cellular Data
• Select Roambit eSIM for internet usage abroad

Default Voice Line (Calls):

• Tap Default Voice Line
• Select your primary SIM (home number)

iMessage & FaceTime:

• Keep on your primary SIM number

Android:

1. Go to Settings → Network & internet → SIMs
2. You'll see both SIMs listed
3. Configure:

Mobile data:

• Tap Mobile data
• Select Roambit eSIM

Calls:

• Tap Calls
• Select your primary SIM

SMS:

• Tap SMS
• Select your primary SIM

Samsung:

1. Go to Settings → Connections → SIM Manager
2. Configure:

• Mobile data → Roambit eSIM
• Calls → Primary SIM
• Messages → Primary SIM

Switching Data Lines Quickly

iPhone:

• Settings → Cellular → Cellular Data → tap to switch

Android Quick Settings:

1. Swipe down from the top of the screen
2. Look for the SIM or Mobile data toggle
3. Tap to switch between SIMs

Samsung Quick Panel:

1. Swipe down for Quick Panel
2. Tap the SIM card tile to switch data

Tips for Dual SIM Management

While Traveling:

• Set Roambit eSIM as your data SIM
• Keep your home SIM for calls and texts (check roaming costs with your carrier)
• If you don't need to receive calls, turn off your physical SIM to save battery

When You Return Home:

1. Switch Mobile data back to your physical SIM
2. You can leave the eSIM installed but disable it
3. Or delete the eSIM if you're done using it

To Disable Without Deleting:

iPhone: Settings → Cellular → Roambit plan → Turn Off This Line Android: Settings → SIMs → Roambit eSIM → toggle off "Use SIM"

Battery tip: Having two active SIMs can increase battery drain by 5-10%. If you don't need your home SIM while abroad, consider disabling it.