No. iphone 6s supports ios 15 [0]. iphone 6 supports up to ios 12 [1] [0] https://support.apple.com/guide/iphone/supported-models-iphe3fa5df43/15.0/ios/15.0 ht

No. iphone 6s supports ios 15 [0]. iphone 6 supports up to ios 12 [1] [0] https://support.apple.com/guide/iphone/supported-models-iphe3fa5df43/15.0/ios/15.0 https://support.apple.com/guide/iphone/supported-models-iphe... [1] https://support.apple.com/guide/iphone/supported-models-iphe3fa5df43/12.0/ios/12.0 https://support.apple.com/guide/iphone/supported-models-iphe...