https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2868865#M25588 use at least class 10 sd card Wed, 20 Nov 2019 04:39:25 GMT Gurmeet1 2019-11-20T04:39:25Z https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2861097#M25436 Is there any effect on performance by using memory card in Samsung m30s  Mon, 18 Nov 2019 19:44:06 GMT https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2861097#M25436 Jitendrachaudhari 2019-11-18T19:44:06Z https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2862127#M25469 no not at all.its just perfect to use a memory card . Tue, 19 Nov 2019 02:23:02 GMT https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2862127#M25469 ShiveshSehgal 2019-11-19T02:23:02Z https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2862217#M25472 in fact memory card helps to increase the space in the internal memory, even application can be moved to external memory card and function, such as Whatsapp etc. There is no drop in the performance. Tue, 19 Nov 2019 02:49:03 GMT https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2862217#M25472 SRK1959 2019-11-19T02:49:03Z https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2868865#M25588 use at least class 10 sd card Wed, 20 Nov 2019 04:39:25 GMT https://r2.community.samsung.com/t5/Tech-Talk/memory-cards/m-p/2868865#M25588 Gurmeet1 2019-11-20T04:39:25Z