Summary: Upgrade changed "Buy" link to include "refurbished iPhone Samsung".

Why It Matters: This change makes the "Buy" link more clear about what is sold.

What Changed:

• The "Buy" link URL changed from https://upgrade.me/en/buy to https://upgrade.me/en/buy-refurbished-iphone-samsung-egypt.
• The "Sell" link URL changed from https://upgrade.me/en/sell to https://upgrade.me/en/sell-used-mobile-egypt-upgrade.
• The "Trade-in" link URL changed from https://upgrade.me/en/trade-in to https://upgrade.me/en/trade-in-old-phone-egypt.