The interlocking blocks crochet phone case

Here is a free pattern for this beautiful interlocking blocks crochet phone case. It is quite easy and fast to make and it looks great!

This pattern uses the interlocking block stitch. You just need to choose three color combination that you like the most and you are ready to start! 🙂

The photo instructions below show how to make this crochet phone case step-by-step, including the interlocking block stitch. When working in rounds, the interlocking block stitch is a repeat of one round.

It is easy to adjust the size of this crochet phone case so that it fits your phone perfectly. The instructions below explain how to do it. I hope that you will give it a try!

You can find my other free crochet patterns here. You might also like my free patterns for the crochet phone case Amelia, the crochet phone case Olivia and the vintage crochet phone case.

Good luck!

The interlocking blocks crochet phone case

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PDF pattern: The interlocking blocks crochet phone case

Pinterest: Also, you can save it to your Pinterest crochet board for later here.

Materials

Yarn: any thin yarn will work. I used Soft FRAYA Cotton 8/4 100% Organic cotton 50g – 180 m, colors: sand, blue, green.
Hook: as suggested on your yarn label. I used 2.0 mm hook.

Abbreviations (US terms)

st: stitch
ch: chain
sc: single crochet
sl st: slip stitch
rep * *: repeat from * to *

Notes

The size of my phone case is 8.5 x 15.5 cm.

You will work in rounds. However, you will change the direction in which you work every round by turning your work inside out (starting with round 3). This pattern uses the interlocking block stitch (photo instructions below show how to make this stitch). To achieve the same color effect as you see in the picture, you will need three different colors. You will change the yarn color every round (starting with round 3). You don’t have to cut yarn after every round, you can carry it inside the phone case. The pattern is a repeat of one round, except the first, the second and the last round.

The size of the phone case can be easily adjusted by chaining more or less in the beginning (keep in mind that the foundation chain should be a multiple of three) and repeating round 3 until you will reach the desired height. It is a good idea to check if your phone fits well when you are done with the first three or four rounds.

Pattern

Start by chaining 24 with sand color yarn (you can adjust the size by chaining more or less, but it should be a multiple of three).

Round 1: To make the first round, you will be working down the chain, then turn and work on the other side of the chain. Make sc in every st of the chain starting from the second chain from your hook. Turn. 1 sc in the end of the chain, make sc in every st (starting with the one you have just worked into; now that st has 3 sc in total) until you come back to the beginning of the chain. 1 sc in the end of the chain. Join with a sl st to the first sc of this round. In total you should have 48 st (or a multiple of six).

Round 2: ch 3 (counts as a st), 2 dc in the next two st, *ch 3, skip 3 st, 3 dc in the next 3 st*, rep ** until the end of the round, ch 3, join with a sl st to the chain three.

Change yarn color to blue.

Round 3: ch 1 (does not count as a st). Turn your work inside out so that you would be crocheting in the other direction. 3 dc in the 3 st two rounds below, *ch 3, skip 3 dc in the previous round, 3 dc in the 3 st two rounds below*, rep ** until the end of the round, ch 3, join with a sl st to the first dc of this round.

Change yarn color to green.

Round 4-37: repeat round 3 changing yarn color after every round: from green to sand, from sand to blue, from blue to green.

Change yarn color to sand.

Round 38: ch 1 (does not count as a st). Turn your work inside out so that you would be crocheting in the other direction. 3 dc in the 3 st two rounds below, *3 sc, 3 dc in the 3 st two rounds below*, rep ** until the end of the round, 3 sc, join with a sl st to the first dc of this round.

Fasten off.

Photo instructions for the interlocking blocks crochet phone case

Round 1

1. Start by chaining multiples of three. I chained 24. You will start working in the second chain from your hook.

2. So, make a single crochet in the second chain from your hook.

3. Continue making single crochets in every stitch until the end of the row.

4. Turn your work and make a single crochet in the end of the chain.

5. Then make single crochets in every stitch starting with the one you have just worked into; now that stitch has 3 single crochets in total.

6. Keep making single crochets until you come back to the beginning of the chain.

7. Then make one single crochet in the end of the chain. Now you have 48 stitches (or a multiple of six).

8. Join with a slip stitch to the first single crochet of this round.

Round 2

9. Chain three. It counts as a stitch.

10. Then make two double crochets in the next two stitches (in the second and the third single crochet of the previous round).

11. Chain three.

12. Skip three stitches and make three double crochets in the next three stitches.

13. Chain three, skip three stitches and make three double crochets in the next three stitches.

14. Work in the same way until the end of the round. The round should end with three chains.

15. To complete the round, join with a slip stitch to the chain three that you made in the beginning of this round.

16. For round 3 you have to change yarn color. So, chain one with the blue yarn. You don’t have to cut the sand yarn, you can carry it inside the phone case.

17. Then pull the end of the sand color yarn to tighten up and secure the blue yarn.

Round 3

18. Starting with round 3 you will change the direction in which you are working every round. In order to do that, turn your work inside out and work from right to left as usually. If you don’t cut yarn every row, have in mind that you have to carry it on a “bad” side. Now the “bad” side is out.

19. You will make three double crochets in the three single crochets two rounds below (in round 1). So, yarn over.

20. Insert your hook in the first single crochet two rounds below and yarn over.

21. Pull the yarn through. Now you have three loops on your hook.

22. Yarn over.

23. Pull the yarn through the first two loops on your hook. Now you have two loops on your hook.

24. Yarn over.

25. Pull the yarn through both loops on your hook. You have just made a double crochet working two rounds below!

26. Make two more double crochets in the next two stitches two rounds below.

27. Chain three.

28. Then skip three double crochets of the previous round and make three double crochets in the next three stitches two rounds below.

29. Continue working in the same way until the end of the round: chain three, skip three double crochets of the previous round and make three double crochets in the next three stitches two rounds below.

30. The round should end with three chains.

31. To complete the round, join with a slip stitch to the first double crochet of this round. Before joining with the slip stitch, make sure that the yarn that you are carrying is on the “bad” side, which in this round is out.

32. Then change yarn color to green in the same way as before.

Round 4

33. Then repeat round 3. Chain one.

34. Turn your work inside out.

35. Make three double crochets in the first three stitches two rounds below.

36. Chain three.

37. Skip three double crochets of the previous round and make three double crochets in the three stitches two rounds below.

38. Continue working in the same way until the end of the round.

39. The round will end with three chains.

40. To complete the round, join with a slip stitch to the first double crochet of this round. Make sure that all yarns that you are carrying are inside the case, since in this round the “bad” side is inside.

41. Change yarn color to sand.

Round 5

42. Then chain one and turn your work inside out. Repeat round 3.

43. Make three double crochets in the first three stitches two rounds below.

44. Chain three, skip three double crochets of the previous round and make three double crochets in the three stitches two rounds below. Continue working in the same way (repeating round 3) until you reach the desired height for your phone case.

The last round (Round 38)

45. The case would look nicer if you could crochet the last round when the “bad” side of the case is inside. Start the last round as usually: chain one and turn your work inside out. Now the “bad” side should be inside.

46. Make three double crochets in the first three stitches two rounds below.

47. Instead of chaining three, make three single crochets in the three double crochets of the previous round.

48. Then make three double crochets in the three stitches two rounds below and three single crochets in the next three double crochets of the previous round.

49. Continue working in the same way until the end of the round. At the end of the round, join with a slip stitch to the first double crochet of this round and fasten off.