Phone Case Crochet Pattern With Strap Waterproof

A protective phone case crochet pattern with strap, featuring inner padding and detachable wrist strap for everyday use.

🤍
Difficulty
🟢 Beginner
Time
⏱️ 3-4 hours
Hook
🪡 E / 3.5mm
Yardage
🧶 approximately 120 yards
Finished Size
📏 6 inches tall x 3.5 inches wide (fits most standard smartphones)
⚠️
Always make a gauge swatch before starting!
Gauge: 20 sc x 22 rows = 4 inches in single crochet
Adjust hook size as needed to match gauge.
📋

At a Glance

The Phone Case Crochet Pattern With Strap Waterproof is a free Beginner-level accessory pattern with a E / 3.5mm hook . Estimated time: 3-4 hours. Finished size: 6 inches tall x 3.5 inches wide (fits most standard smartphones). You'll need approximately approximately 120 yards of yarn.

19 steps across 5 sections  ·  Free under CC BY-NC-SA 4.0 — you can sell finished items

🛒 Materials

DK weight yarn
120 yards main color, 30 yards contrast color for strap
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Crochet hook
Size E/3.5mm
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Thin foam padding
6x7 inch piece, craft foam or EVA foam
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Fabric liner
6x7 inch waterproof fabric or vinyl
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Swivel clasp
1 inch lobster clasp for strap
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Button
1 inch diameter for flap closure
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Tapestry needle
For weaving in ends
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Stitch markers
2-3 markers
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📖 Abbreviations

ch — chain
sc — single crochet
sl st — slip stitch
st(s) — stitch(es)
BLO — back loop only
sc2tog — single crochet two together (decrease)

📌 Before You Begin

💡

Pattern is worked flat in rows, then seamed at sides. Case fits phones approximately 5.5-6 inches tall and 2.5-3.25 inches wide.

💡

To customize size: adjust foundation chain in multiples of 2. Add or subtract rows as needed for phone height.

💡

Tight gauge is essential for phone protection. Go down a hook size if fabric is loose.

💡

Waterproof fabric liner is optional but recommended for weather protection.

🧶 Pattern Instructions

💡 Tip: Mark the right side of one piece to help with assembly later.
  1. Row 1
    With main color, ch 18. Sc in 2nd ch from hook and in each ch across. Ch 1, turn. (17 sc)
  2. Rows 2-30
    Sc in each st across. Ch 1, turn. (17 sc)
  3. Row 31
    Sc in each st across. Fasten off, leaving 24-inch tail for seaming. (17 sc)
Row counter:
💡 Tip: This creates a tapered flap that tucks into the case opening.
  1. Row 1
    With right side facing, join main color to top edge of one body piece. Ch 1, sc evenly across top edge. Ch 1, turn. (17 sc)
  2. Rows 2-6
    Sc in each st across. Ch 1, turn. (17 sc)
  3. Row 7
    Sc2tog, sc in each st until 2 sts remain, sc2tog. Ch 1, turn. (15 sc)
  4. Row 8
    Sc2tog, sc in each st until 2 sts remain, sc2tog. Ch 1, turn. (13 sc)
  5. Row 9
    Sc2tog, sc in each st until 2 sts remain, sc2tog. Fasten off. (11 sc)
Row counter:
💡 Tip: Ensure padding is centered before seaming to provide even protection.
  1. Step 1
    Cut foam padding to 5.5 x 3 inches. Cut waterproof fabric to same size. Layer fabric on top of foam.
  2. Step 2
    Place padding between wrong sides of two body pieces. Pin in place.
  3. Step 3
    Using tapestry needle and long tail, whipstitch side and bottom edges together with tight, even stitches, encasing the padding layer inside.
  4. Step 4
    Join yarn at any bottom corner. Work 1 round sc evenly around entire perimeter of case including flap edges, working 2 sc in each corner. Sl st to first sc. Fasten off.
Row counter:
💡 Tip: For adjustable length, make strap longer and add a slide adjuster before attaching clasp.
  1. Row 1
    With contrast color, ch 61. Sc in 2nd ch from hook and in each ch across. Ch 1, turn. (60 sc)
  2. Rows 2-3
    Sc in each st across. Ch 1, turn. (60 sc)
  3. Row 4
    Sc in each st across. Fasten off, leaving 8-inch tail. (60 sc)
  4. Strap loop
    At one short end of strap, fold over 1 inch. Thread lobster clasp through fold. Sew fold securely to create loop around clasp.
  5. Attachment
    With tapestry needle, sew other end of strap securely to bottom corner of phone case, reinforcing with several passes.
Row counter:
💡 Tip: Test button closure before final sewing to ensure proper fit.
  1. Button loop
    At center point of flap, join yarn. Ch 8, sl st to same point to form loop (or adjust chain count to fit your button size). Fasten off and weave in ends.
  2. Button placement
    Fold flap down over case front. Mark position where button should align with loop. Sew button securely to front of case at marked position.
Row counter:

✂️ Finishing

Weave in all remaining yarn ends using tapestry needle, working through several stitches to secure. Trim excess yarn close to work. Check all seams for gaps and reinforce if needed. Test phone fit by gently inserting phone into case - it should fit snugly but not too tight. If case is too small, block lightly with steam to relax fibers slightly. If too large, consider remaking with smaller hook. Attach lobster clasp to case's side seam or add a small D-ring sewn to the side for strap attachment versatility.

🧺 Care Instructions

Hand wash in cool water with mild detergent. Remove phone and any padding before washing. Press gently to remove excess water - do not wring. Lay flat to dry away from direct heat or sunlight. If using waterproof liner, wipe clean with damp cloth as needed. Reinsert padding only when completely dry. For acrylic yarn, case is machine washable on gentle cycle in mesh bag, but hand washing extends life. Check seams and button periodically and reinforce stitching as needed with regular use.

🤖 This pattern was generated by AI and may contain errors. Always test your gauge before starting.

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Questions About This Pattern

Absolutely — just match the weight (Dk). You'll need about approximately 120 yards, so make sure your substitute has enough meterage. Acrylic is budget-friendly and machine-washable; wool gives better stitch definition and drape.
Yes! This is one of the friendlier patterns to start with. You only need to know: ch, sc, sl st, st(s). Work slowly, count your stitches at the end of each row, and don't be afraid to frog (rip back) and redo a section — that's how everyone learns. Budget about 3-4 hours; beginners often take a bit longer, and that's totally fine.
Usually it's the joining or finishing — where individual sections meet and need to align. Read through the entire pattern once before you start so there are no surprises. Use stitch markers generously to track your place, especially in rounds. If a section looks wrong, count your stitches before proceeding — catching an error early saves a lot of frogging later.
For this pattern, gauge is "20 sc x 22 rows = 4 inches in single crochet". For decorative or non-fitted items it's less critical, but matching gauge ensures you use the right amount of yarn and get the proportions the pattern intends. If your swatch is too small (too many stitches/inch), go up a hook size. Too large — go down.
Hand wash in cool water with mild detergent. Remove phone and any padding before washing. Press gently to remove excess water - do not wring. Lay flat to dry away from direct heat or sunlight. If using waterproof liner, wipe clean with damp cloth as needed. Reinsert padding only when completely dry. For acrylic yarn, case is machine washable on gentle cycle in mesh bag, but hand washing extends life. Check seams and button periodically and reinforce stitching as needed with regular use. A general rule: when unsure about the yarn, hand wash in cool water with a drop of gentle detergent, squeeze (don't wring), and block flat to dry. This is safe for almost every fiber.
Each section builds on the last, so yes — follow them in order. That said, some finishing sections (like embellishments or optional edging) can be skipped if you prefer a simpler look. Read through all sections before starting so you understand how the pieces fit together and can plan your yarn usage across sections.