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To transfer over 500 tabs from Opera Touch on your phone to your computer, sign in to your Opera account on both devices for seamless syncing. Alternatively, open tabs can be bookmarked individually on your phone, then synced via your account for access on your computer. If these options don't apply, explore third-party solutions like browser extensions or tools such as "One Tab" to consolidate and export tabs. Efficient tab management is essential to prevent device slowdowns.