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EASY WAY TO ADD 91 TO ALL MOBILE : Here are 3 EASY & SAFE ways to add country code +91 in Excel / Google Sheet (Choose the one that fits your data đ) ✅ METHOD 1: If numbers are in Column A (Most Common) Example: 9892350869 In B2 , enter: = "91" &A2 ➡ Drag down for all rows ✔ Simple ✔ No risk ✔ Works everywhere ✅ METHOD 2: Using Formula (Best – Keeps number format safe) Prevents Excel from removing leading digits. =CONCAT("91",A2) ✔ Recommended ✔ Clean output ✅ METHOD 3: Convert Entire Column at Once (Paste Special) If you want to permanently modify numbers: Type 91 in an empty cell Copy it Select all mobile numbers Paste Special → Multiply ⚠ Use only if numbers are exactly 10 digits đ¨ IMPORTANT SETTINGS (Must Do) Before adding 91: ✔ Select column → Format as Text ✔ Avoid scientific notation ✔ No spaces, no + sign Correct format: 919892350869 Wrong format: +91 98923 50869 ❌ 91-9892350869 ❌ ✅ FINAL CHECK (Ver...